Realistically Carrie sitting in the middle of the other popular girls on her first day in real school, sweetly telling them she made her dress herself, would get immediately adopted into their circle and protected as someone who doesn’t know any better. In the books, Carrie is bullied not just for being an overweight outcast, but because she is also a religious fanatic who tells the other kids that they’re all going to hell. She doesn’t make much of an effort to be their friend either, being described as suspicious and rude. If you make Carrie a sweet baby angel who can do no wrong, it really flattens the antagonists here (her bullies) into evil (and unconvincing) stereotypes. Which is…. Fine but not as compelling as the source material