I went to a college where all three professors who taught Chem 101 would collaborate on writing one exam that students from all three classes would then take at

I went to a college where all three professors who taught Chem 101 would collaborate on writing one exam that students from all three classes would then take at the same time in an auditorium setting. This kept the testing fair over the entire course and forced the professors to teach material based on agreed upon in advance topics to certain standards.