High school senior going to graduate in a couple of months. Anything I can do to cover my tracks?

I have been using google classroom and chromebooks since I have been in school. Is there any data I can request deletion of to the school? Or anything else I can take advantage of before I do not have access to school resources anymore. I have not had a very good track record as far as browsing history goes, and I have had a lot of personal data on school accounts because I didn't know any better back then.

access can chromebooks data data i deletion google high high school privacy request school