After being beating up because of his lack of social skills, a college student with Asperger’s syndrome decides to shoot his classmates and professor.

New version.... The End.

1) He was beaten up.

2) He wants to kill his classmates with a gun.

I have to agree, some specifics would be helpful to flesh this logline out.

First: How is the lead bullied? Is he given a wedgie? Beaten up? Did he have his clothes stolen while taking a shower at gym class? What is the specific event that sets off the lead character?

Second: And the term, revenge is vague as well. Does he put laxatives in the school lunch? Does he hack the school computer and give them all F's, Does he burn down the school?

In other words, depending on the type of revenge, (Funny, mean, poetic justice etc.)? this could be "Revenge of the Nerds" or it could be "The Basketball Diaries" And that is a pretty big swing of styles.