Maintaining a 3.3 GPA

How hard is it to maintain a 3.3 GPA at U Mass Amherst?
I know that it also depends on major but I am unsure on what I want to do and want a general idea of how hard it would be to maintain a 3.3 GPA

If it helps for comparison I have a 3.5 GPA in Milton High school and am going into my senior year at the end of the summer.
Would i be able to maintain a 3.3 GPA?

I have a good work ethic and can study hard but I am just being nervous

You cant really answer this question depends on classes, professors and work habit…