hasn't mattered in years if you have old tests and homework or not.
rote learning is dead in community & four years.
you can't memorized the answers to questions which have never been asked before.
schools know all about frats, crametsr.com, student's forums, collaborative websites, and torrents of instructors PDF answerbooks.
as a consequence profs & TAs meet at the beginning of the term to design brand new mid-terms and finals for each class.
the tests are reviewed in the department and edited.
to a large degree that's why today california state university undergraduate engineering education is arguably as good as university of california undergraduate engineering education.
the upcoming shocks that will startle preps to no end is when
1) the sat goes to online proctored testing pulling questions from a database of millions
2) when sat physics only have symbolic answers.
i'm glad i'm not in high school anymore that's for sure.