You are responsible for getting to class on time.
You are responsible for buying and reading course books.
You are responsible for taking notes in lectures and seminars (you may be lucky and have a lecturer who provides handouts but these are to support not to replace your own notes).
You are responsible for attending classes. Tutors may write to you if they haven’t seen you in a while to check up on you but unlike school, academic sessions at university are usually voluntary.
At school you may have been given the impression that there is one way to read a text. At university you are likely to be encouraged to view texts in different ways, to construct and support arguments based on your own reading. This may be daunting at first but it’s also liberating.