I think my mom threw my homework in the trash.
Why would she throw your homework in the trash?
She thinks school and homework is a waste of time for me.
I'm sorry she's engaging in that sort of behavior.  Parents shouldn't deliberately harm the future prospects of their children, which she's doing by interfering with you education.  I hope she cuts that kind of behavior out!
She just wants to do what's best for me.
I'm sure it seems like she has your best interest at heart, but you should make the decisions about your future that will make you happy. If you want to continue your education you should do so and follow your dreams.