Is it a big deal to UCLA if you dropped one or two classes in high school? Will they reject you based on that?
If you dropped classes Senior year that were originally reported on your UC application, you are required to notify the UC’s. If the classes were dropped prior to Senior year and they are reported on your HS transcript, you still need to list them on your UC application. If you did report any omissions or schedule changes to the UC’s and your HS transcript does not match your self-reported courses on the application, the UC’s could rescind your acceptance.
Dropping HS classes are not a reason for an automatic rejection but depending upon the circumstances you could be rescinded.