What is this movie called?!

What is this movie called?

ok idont know why im doing this, but my brother wants me to ask. the only thing he can remember was that he thinks its about a guy remembering his past or something, and he goes through the steps like 9th grade and 10th grade. he says he thinks its an old movie. The only One part he remembers that is really perverted is these guys in 10th grade hide in the vents and look at girls in their dressing rooms. Well thats all he remembers.

1 week ago
hey says its not the butterfly effect. hes pretty sure its an old movie

The Butterfly Effect...??