I'm glad to hear that ..... this mean, probably, that you are not like the physic teacher that i had at school, that had the bad abitude to talk for a week about a specific argument, preparing us for a Wednesday-flying-examination, then arrive the Wednesday and, half of the times, give a totally different argument as examination subject .....
I feel you! In my Uni some teachers had discovered that with the student books they got a teachers book, which had a pdf presentation of the whole book. It also contained a exam maker, which you put down (in the program), from which chapters of the book to comprise the test, then you set the difficulty moderation and you set the number of questions for the test. This resulted in months of teacher blabbering and emphasizing different points during the whole coarse which where complete irrelevant; to the extent that 09% of the exams where irrelevant to what was being said in class...
The only solution was to just disregard anything the teachers where saying and just read the book by yourself
P.S Goodluck