Question

Why is Fahrenheit 451 banned from most schools

Answer 1

It is banned from most schools because one of the books burned in Fahrenheit 451 is the Bible.

Answer 2

Chances are, most districts might see the book as too 'adult' and would rather not have a student get their hands on a book, especially from the school. Parents might not agree with the book, and wouldn't like their child coming across the book, and if their kid were to read it, the district/school could get in trouble for it.