Sources

What are sources? In my university (CUHK), sources are model answers for things such as assignments which are generated by some "pros" who did the work, or from previous years or semesters. So basically, sources are answer keys to assignments. ... But why am I writing something about sourcing. Firstly, sources should not appear as it will cause plagiarism and things like that. It is also not ethical to copy from sources. But most important of all ... there are sources for ACTUAL TESTS!!! What on Earth happened, I don't really know and don't really care. But hey, people are COPYING LEGALLY FROM SOURCES!!! DURING A TEST!!! The fustration of it all, man... During that test, the professor allowed "one sheet of formula", and those dudes just copied all the answer from the source to that formula sheet and then just copied during the test, legally. Oh man ... for the sake of all things good, please, LET ME OUT OF THIS HELL OF A DEPARTMENT!!! Argh~!