
Dad | Senior learning scientist @Alphaschool | Professor @AcademicaUoAS | UNESCO SoL editorial board | Dubliner | Keats devotee | persecuted by an integer
London, England
Joined July 2009
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NEW POST: The Untold Story of Bloom's Taxonomy and the Pyramid That Never Was.
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🤖 Made with AI
Carl Hendrick retweeted
What astonishes me about the Project follow through cover up was how the evidence points clearly one way-DI- but people still didn’t want to engage with it because it contradicted their priors.
This evidence is vital. Because if you make any empirical claim, you need empirical evidence to back it up. You can’t just say ‘I believe this’ and expect people to accept that and shake your hand.
The tragedy is that often this *does* work, because people often weigh evidence as only one factor in their deliberation, balanced against emotional resonance, coherence with existing biases etc.
History catches up with the education establishment in this important Season 2 of Sold a Story. Meaningful education advances could have been made in the last 50 years, as has occurred in other fields, where evidence is weighed more carefully and objectively. But they weren’t, and socioeconomic status continues to drive education outcomes, where classroom instruction should have the upper hand on this.
Andrew is one of the few people thinking about this clearly.
Replying to @RogersHistory
Too much of this is just they said personalised learning couldn't be done, but now they are involved in a technology that might be able to differentiate for every pupil.
Has AI not changed your views on what is possible? I'm hardly about to go and advise Alpha, but I am certainly revising my views on what can be done. If somebody told me five years ago I'd be spending $100 a month of my own money on online technology that helps me teach I would have thought they were mad.
Am I now an apostate, too?
Carl Hendrick retweeted
.@Alphaschool is hiring a Speech-Language Pathologist for contract work.
Please pass this on to anyone who might be interested?
alpha.crossover.com/jobs/586…
Carl Hendrick retweeted
I rarely come on here anymore. What I've seen in the last few days has reminded me of why. I think it's right and understandable that people will have q about Alpha. But the personal insults are gross. @C_Hendrick @SCottinghatt @effortfuleduktr & others are the best of people.
Carl Hendrick retweeted
Watched Alpha School's talk on learning science yesterday. Very inspired by where this is heading!
Education should be scalable, science-backed, self-paced, and built around each student's goals and current level.
That's the future of education, and we are already building it
If you’re curious about the learning science our team is working on, join us tonight at 6:00pm CT. Live.alpha.school
Carl Hendrick retweeted
Over 2000 copies sold!
Get yours at #DyslexiaCon bookstore
💜💜💜
Carl Hendrick retweeted
Having worked in EdTech for 10 years, while still doing all that I can to support teachers, I think Sarah has stated the need for and importance of new technologies better than I have ever managed. Bravo.
It’s sad to see a lot of hate between educators.
Let me be clear about my values, intentions, and reasoning for joining @alphaschool. First, I have spent fourteen-years in the classroom up to Director level, working across disadvantaged, non-disadvantaged, and SEND school communities. I have also taught in a 25% First Nations school in Australia and was fortunate to do voluntary consultancy in Sierra Leone (one of the world’s poorest and educationally deprived countries) for seven months. Sierra Leone, due to its teacher poverty, relies heavily on the development of Edtech apps.
I love everything about being a teacher, researcher, and educator, and I went into this profession with the genuine belief that education is the one single thing that can improve the world.
My experience of being in education has been vastly fulfilling, but it has also been extremely sobering and stark: I have been unable to hire a single English teacher in Greater Manchester for over a year, due to a damning OFSTED report; I have been in a gun and knife lockdown; I have had to hold a printer on the back of a motorcycle so that a school could print resources; I have had to minimise violence and disruption in hundreds of cover lessons; I have experienced bullying from senior leaders (including an instance where I was shut in a room because the CEO “wouldn’t like my trousers”); I have seen teachers distraught, depressed, demotivated, and disenfranchised with a profession that is supposed to herald the single most valuable thing… knowledge and learning. Sadly, for numerous reasons (including some of the absolute hatred and animosity that exists between educators themselves) many teachers leave the profession. So, sadly, many students don’t get the opportunity to have a teacher in front of them - this includes both in deprived areas of the United Kingdom as well as in hundreds of countries in the world.
If you are reading this and are having the debate about having a teacher vs an AI teaching-agent, then I’m honestly happy for you. To me, it makes me feel as though you are in a place where you’re privileged and resourced enough to have the debate. In these cases, AI will not replace nor take-over educators. However, stopping the technology from being developed is hugely damaging for those in the world who can’t access this debate. The student with no teacher right now.
These classrooms are losing time unless we can either 1) unite as educators, increase Government funding, and make the teaching profession an attractive, safe and correctly resourced environment for every teacher and student in the world or 2) work, for the first time ever, with tech companies to ensure that the technology being developed is not a misinformed AI app built in isolation from educators, but AI technology that genuinely works with teachers for teachers to plug gaps where they need. Because, for all the reasons above, there are gaps.
I am not attacking the UK teaching community. I am trying to see how I can make this work, with the hopes that it will reach those who need it the most in 5-10 years.
Carl Hendrick retweeted
Working with Sarah and others in the team at Alpha is an incredible experience.
1. It’s incredibly intellectually demanding as we try to create crystal clear instruction.
2. This model is one worth exploring alongside the other models we have.
It’s sad to see a lot of hate between educators.
Let me be clear about my values, intentions, and reasoning for joining @alphaschool. First, I have spent fourteen-years in the classroom up to Director level, working across disadvantaged, non-disadvantaged, and SEND school communities. I have also taught in a 25% First Nations school in Australia and was fortunate to do voluntary consultancy in Sierra Leone (one of the world’s poorest and educationally deprived countries) for seven months. Sierra Leone, due to its teacher poverty, relies heavily on the development of Edtech apps.
I love everything about being a teacher, researcher, and educator, and I went into this profession with the genuine belief that education is the one single thing that can improve the world.
My experience of being in education has been vastly fulfilling, but it has also been extremely sobering and stark: I have been unable to hire a single English teacher in Greater Manchester for over a year, due to a damning OFSTED report; I have been in a gun and knife lockdown; I have had to hold a printer on the back of a motorcycle so that a school could print resources; I have had to minimise violence and disruption in hundreds of cover lessons; I have experienced bullying from senior leaders (including an instance where I was shut in a room because the CEO “wouldn’t like my trousers”); I have seen teachers distraught, depressed, demotivated, and disenfranchised with a profession that is supposed to herald the single most valuable thing… knowledge and learning. Sadly, for numerous reasons (including some of the absolute hatred and animosity that exists between educators themselves) many teachers leave the profession. So, sadly, many students don’t get the opportunity to have a teacher in front of them - this includes both in deprived areas of the United Kingdom as well as in hundreds of countries in the world.
If you are reading this and are having the debate about having a teacher vs an AI teaching-agent, then I’m honestly happy for you. To me, it makes me feel as though you are in a place where you’re privileged and resourced enough to have the debate. In these cases, AI will not replace nor take-over educators. However, stopping the technology from being developed is hugely damaging for those in the world who can’t access this debate. The student with no teacher right now.
These classrooms are losing time unless we can either 1) unite as educators, increase Government funding, and make the teaching profession an attractive, safe and correctly resourced environment for every teacher and student in the world or 2) work, for the first time ever, with tech companies to ensure that the technology being developed is not a misinformed AI app built in isolation from educators, but AI technology that genuinely works with teachers for teachers to plug gaps where they need. Because, for all the reasons above, there are gaps.
I am not attacking the UK teaching community. I am trying to see how I can make this work, with the hopes that it will reach those who need it the most in 5-10 years.
Carl Hendrick retweeted
It’s sad to see a lot of hate between educators.
Let me be clear about my values, intentions, and reasoning for joining @alphaschool. First, I have spent fourteen-years in the classroom up to Director level, working across disadvantaged, non-disadvantaged, and SEND school communities. I have also taught in a 25% First Nations school in Australia and was fortunate to do voluntary consultancy in Sierra Leone (one of the world’s poorest and educationally deprived countries) for seven months. Sierra Leone, due to its teacher poverty, relies heavily on the development of Edtech apps.
I love everything about being a teacher, researcher, and educator, and I went into this profession with the genuine belief that education is the one single thing that can improve the world.
My experience of being in education has been vastly fulfilling, but it has also been extremely sobering and stark: I have been unable to hire a single English teacher in Greater Manchester for over a year, due to a damning OFSTED report; I have been in a gun and knife lockdown; I have had to hold a printer on the back of a motorcycle so that a school could print resources; I have had to minimise violence and disruption in hundreds of cover lessons; I have experienced bullying from senior leaders (including an instance where I was shut in a room because the CEO “wouldn’t like my trousers”); I have seen teachers distraught, depressed, demotivated, and disenfranchised with a profession that is supposed to herald the single most valuable thing… knowledge and learning. Sadly, for numerous reasons (including some of the absolute hatred and animosity that exists between educators themselves) many teachers leave the profession. So, sadly, many students don’t get the opportunity to have a teacher in front of them - this includes both in deprived areas of the United Kingdom as well as in hundreds of countries in the world.
If you are reading this and are having the debate about having a teacher vs an AI teaching-agent, then I’m honestly happy for you. To me, it makes me feel as though you are in a place where you’re privileged and resourced enough to have the debate. In these cases, AI will not replace nor take-over educators. However, stopping the technology from being developed is hugely damaging for those in the world who can’t access this debate. The student with no teacher right now.
These classrooms are losing time unless we can either 1) unite as educators, increase Government funding, and make the teaching profession an attractive, safe and correctly resourced environment for every teacher and student in the world or 2) work, for the first time ever, with tech companies to ensure that the technology being developed is not a misinformed AI app built in isolation from educators, but AI technology that genuinely works with teachers for teachers to plug gaps where they need. Because, for all the reasons above, there are gaps.
I am not attacking the UK teaching community. I am trying to see how I can make this work, with the hopes that it will reach those who need it the most in 5-10 years.
Carl Hendrick retweeted
Good and thoughtful post from Sarah Donarski, which touches on the some of the reasons I’m more open to responsible experimentation and A.I. in education than I expected to be. Not long ago I visited a classroom not far from where I taught in the South Bronx to see an A.I. app teaching reading. Candidly the teachers were unimpressive, bordering on indifferent. The only instruction the kids were getting was from the app. I wish it weren’t so but it is. I get why excellent teachers would view A.I. as an unworthy replacement. The trouble is we need *millions* of those excellent teachers and I’ve seen no proof they exist in those numbers or want the job. Similarly, I share the widespread skepticism that we can fully digitize education. But the low-performing school where I taught is still low-performing 25 years later. So until or unless we can find those millions of saints and superstar to put in front of every child, I have to be open to any alternative whether I like it or not.
P.S. I don’t work for Alpha and will not. But I’ve been visiting their schools, talking to staff, students, and parents with an eye toward offering an informed view of what they’re doing. I’m grateful to them to letting me in to observe. There will be much more to say.
It’s sad to see a lot of hate between educators.
Let me be clear about my values, intentions, and reasoning for joining @alphaschool. First, I have spent fourteen-years in the classroom up to Director level, working across disadvantaged, non-disadvantaged, and SEND school communities. I have also taught in a 25% First Nations school in Australia and was fortunate to do voluntary consultancy in Sierra Leone (one of the world’s poorest and educationally deprived countries) for seven months. Sierra Leone, due to its teacher poverty, relies heavily on the development of Edtech apps.
I love everything about being a teacher, researcher, and educator, and I went into this profession with the genuine belief that education is the one single thing that can improve the world.
My experience of being in education has been vastly fulfilling, but it has also been extremely sobering and stark: I have been unable to hire a single English teacher in Greater Manchester for over a year, due to a damning OFSTED report; I have been in a gun and knife lockdown; I have had to hold a printer on the back of a motorcycle so that a school could print resources; I have had to minimise violence and disruption in hundreds of cover lessons; I have experienced bullying from senior leaders (including an instance where I was shut in a room because the CEO “wouldn’t like my trousers”); I have seen teachers distraught, depressed, demotivated, and disenfranchised with a profession that is supposed to herald the single most valuable thing… knowledge and learning. Sadly, for numerous reasons (including some of the absolute hatred and animosity that exists between educators themselves) many teachers leave the profession. So, sadly, many students don’t get the opportunity to have a teacher in front of them - this includes both in deprived areas of the United Kingdom as well as in hundreds of countries in the world.
If you are reading this and are having the debate about having a teacher vs an AI teaching-agent, then I’m honestly happy for you. To me, it makes me feel as though you are in a place where you’re privileged and resourced enough to have the debate. In these cases, AI will not replace nor take-over educators. However, stopping the technology from being developed is hugely damaging for those in the world who can’t access this debate. The student with no teacher right now.
These classrooms are losing time unless we can either 1) unite as educators, increase Government funding, and make the teaching profession an attractive, safe and correctly resourced environment for every teacher and student in the world or 2) work, for the first time ever, with tech companies to ensure that the technology being developed is not a misinformed AI app built in isolation from educators, but AI technology that genuinely works with teachers for teachers to plug gaps where they need. Because, for all the reasons above, there are gaps.
I am not attacking the UK teaching community. I am trying to see how I can make this work, with the hopes that it will reach those who need it the most in 5-10 years.
The single best decision we made for cleaner data was asking the pretrieval question.
It tells us which kids can answer the question independently before the tutorial, which lets us measure:
• How accurate the diagnostic is (a kid’s pretrieval answer vs. how the rest of the cohort does on that lesson)
• How effective the initial instruction is
• How big the jump is from the prerequisites to the new lesson (share of kids who get the pretrieval right)
And the kids love it -- it saves them time.
Carl Hendrick retweeted
It's here! Team Up With the Text (my new📖with @paul_bambrick) is available today! If you know we can do better than teaching "inference" ad nauseum, but you want practical, research-driven alternatives, check us out. a.co/d/06D7dlpa
Carl Hendrick retweeted
For anyone wondering why I’m so passionate about school choice and gifted education. Meet my 4yo. He still has 10 months before he should be in kindergarten.
Carl Hendrick retweeted
Episode 6 of Sold a Story Season 2 is out now. apmreports.org/episode/2026/…
Carl Hendrick retweeted
They really are going to make me defend Alpha School.
Please, just stop making criticisms that are so stupid I feel like arguing about them.
Perhaps @daisychristo can save me by criticising their model in ways I agree with?
Carl Hendrick retweeted
Replying to @DTWillingham
@DTWillingham's new piece argues the fight over Direct Instruction may not be about what works, but about what we want school to be.
There's room for both.
@C_Hendrick is right: “You can’t connect the dots if you don’t have any dots.”
Carl Hendrick retweeted
People writing long analyses of Alpha School are getting lost in the weeds
The fundamental difference and the only one that really matters is that Alpha School believes that learning things quickly is good, while other schools believe that fast learners must be hobbled to prevent inequality.
My son was ready to begin learning algebra two years ago (how do I know? because he was working out of the district's algebra textbook at home with me) but his school refused to allow him to even look at an algebra textbook in the classroom in his spare time after he finished his work.
(This is in our district's highly-selective gifted program, which is so sought-after that parents will pull their kids out of the local private schools if they manage to test in. They gather the best and brightest kids in the entire region and have them spend their extra classroom time playing Minecraft instead of progressing beyond grade level.)
After two years of fighting a losing battle, we gave up and enrolled in Alpha's homeschool program.
We're very happy with it so far, but it doesn't even matter. Because even if the pedagogy was terrible, even if the instruction was completely lacking, I will always choose a dysfunctional organization that WANTS TO LET MY CHILD LEARN over a pedagogically perfect school that insists on holding my child back.
I think lots of people are confused about this Alpha business. When you see someone who has advocated for a specific set of ideas for a long time go on to join or lead an organisation that seems completely antithetical to those ideas, then it's reasonable to be confused.
Yesterday, I briefly discussed this with @PepsMccrea, and I argued that Alpha represents educational progressivism with a veneer of "learning science" (or what we have normally called "cognitive science" in England). Here, I'd like to expand a bit on that. I'm not going to cite every claim, because this has been part of common discourse here for at least a year (as long as Carl [and I think Peps]) have been working for Alpha.
First, instrumentalism. In England, educational traditionalists (like Carl and Peps) argued that education and the education system is not designed merely to prepare students for the world of work. Instead, it is there to pass on cultural heritage, and knowledge for its own sake. Progressives on the other hand argued that it was more about "21st century skills" and railed against a system that "failed to prepare students for jobs that hadn't been invented yet."
It's clear that Alpha is built in this vein. It runs courses on entrepreneurialism, media training, startup founding etc etc. NONE of their marketing that I have seen is about the joy of learning or being inculcated into a cultural or intellectual tradition.
Second, long term learning. Proponents on this site have boasted about how students finish courses in a matter of days. One of the very first things I learnt from the traditionalist school was that learning is a process that occurs over the long term, and that short term performance means little.
Third, "time back". Alpha uses an app called Timeback, which broadly - in my understanding - means that if students do well on their 2 hours of AI-enabled academics, they get more time to do other stuff. This again emphasises that academic education is something to be "got through" so we can get to the fun stuff: Navy SEAL training, social media, horse riding and...entrepreneurship.
Fourth, in a similar vein, extrinsic motivation. Alpha has heavily pursued gamification and an extrinsic reward system. Again, English traditionalists used Self Determination Theory as a key plank of their arguments about schools and education, and extrinsic motivation as an educational lever has been widely derided based on simple findings from the SDT literature.
Fifth, personalisation. Every so often someone here said we should teach shakespeare through rap or dance or whatever. Traditionalists thought this was awful. The content is the content, and it is our job to take students beyond their horizons, not pander to their narrow set of cultural experiences. And yet this is exactly what Alpha does. Writing lessons are based on students' particular interests, so Harry Potter and minecraft. Alpha students have spoken about how Romeo and Juliet etc is outdated and boring. Again, very much at odds with what proponents have said in the past.
Sixth, trashing the traditional model. We suffered our way through Shift Happens and Schools on Trial (or whatever it was called) which went on and on about factory models and Gradgrind and sage on the stage etc. And yet Alpha promotional materials do the same.
Seventh, children on social media. This was the most surprising thing this year, where students at Alpha schools were tasked with setting up an X account and getting a certain number of followers. This is obviously a safeguarding concern, and if an English school leader did this it is likely they would be out of a job pretty quickly. Again, opposing social media and teens on phones has been an important part of the traditionalist movement.
Eighth, it's an experiment. This is a kind of trial - "we are trying to figure out if we can do this." There's a couple of problems here. First, children aren't guinea pigs (even if their parents are rich). Second, trialling it in the best possible circumstances (i.e. a rich private school) seems like a good idea because the risk is low, but it's also why it won't scale. Anyone who has tried to roll out educational change knows that there is an "adoption curve" and a chasm between your early adopters and everyone else. What works for one categorically doesn't work for the other. This is basically as close to an iron clad law of business and scaling tech as you can get. But also, if you really wanted to make change and improve the lives of children globally, you'd focus on the things we know work because we've seen them work! Everyone on that team knows about Michaela, Mercia, Ark King Solomon, West London Free School, Mossbourne, TTA and more. Schools that do incredible things for underprivileged students with a fraction of the budget. High academic expectations. Expert teachers. Brilliant behaviour. Knowledge-rich curriculums. If we really care about scaling educational solutions, let's start there.
While we're at it, the focus of the traditional movement was always on disadvantaged students. What can we do for them? How can we help them? How do we serve those who need it the most? Alpha is so obviously not that. It's a hyper-expensive school for the children of elites. Of course, those students need educating too, but dedicating so much time and energy and intellectual capital to them seems at odds with everything that has come before.
Ninth, and it's going to be hard to say this without being catty, but respect for academia and qualifications. I want to be super clear that I massively respect the intellectual acumen of people like Carl, Peps, Becky and others. But, they are not "learning scientists." To the best of my knowledge, nobody on the team has produced original research in that particular field. Again, that doesn't mean they are not worth listening to or whatever - but part of the traditional revolution in England was discovering these researchers who had made incredible findings about learning and the brain, within the confines of the peer-review and scientific inquiry method. I know that arguments from authority aren't empirical, but being able to rely on people like Kirschner, Willingham, Dunlosky and others was critical to the success of the traditional movement.
Tenth, transferable skills. One of the founding principles of educational traditionalism is that you cannot teach generic or transferable skills like "Leadership" or "resilience", but the Alpha website and promotional materials are full of this stuff.
Eleventh, track record. Alpha people have been talking about how fantastic their content is for at least a year, but we are now told that it is just "ok." Obviously most of it is proprietary, but someone posted some physics stuff last week and I thought it was pretty poor. Michael Pershan has blogged similarly, and Dan Meyer (!) has pointed to the objective data from a school that adopted Alpha and ended up doing worse.
Twelfth, similar - ratification. Part of why England has succeeded is that we have objective metrics like standardised assessments and progress 8 that allow us to test the claims of schools and educationalists. Alpha has no such metrics, and instead we need to take their word for it that they are causing "2x learning." It's a surprise to see people who have been part of the positivist and outcomes-led policy movement wanting to be involved in this kind of non-verifiable model.
Thirteenth, real books, but as a totem standing for traditionalism. A number of people have asked if Alpha students read real books. On paper. Great books. There hasn't been much of an answer, beyond a picture of a library. Ok, books are important, but they aren't really my point here. My point is that there is a romanticism around traditional education. Something that goes beyond the petty mechanics of pedagogy, and taps into something social and cultural about learning. That we are one link in a long chain of transmission, a chain which cherishes books not because of a fascination with bleached wood pulp, but because of what they represent: our ability to transcend the narrow confines of our lives and swim in the streams of collective human intellectual endeavour. Nothing I've seen at Alpha tells me there's anything like that idealism. Instead, it strikes me as a desiccated and hollowed-out vision of education, where students learn not from another human, but from an AI-generated screen.
It doesn't surprise me that some people are interested in Alpha. It seems exciting and innovative as a business model. But it does surprise me that THESE people are interested in it. I harbour no ill will towards them, and as I've said I respect their work. I hope this comes across as respectful and measured. But it's no surprise that people are surprised.
Carl Hendrick retweeted
Replying to @DonaldClark @HargreavesBC
Especially when you know how your mind works. Given the extraordinary progress in AI as tutors, I think giving our students a user manual for the mind is likely to be one of the most important things we can do for them...
Carl Hendrick retweeted
Replying to @HargreavesBC
Not wholly true. I haven't had a teacher of been on a course for decades but use pedagogic techniques to learn. Human teaching is not a necessary condition for learning.

































