<p>I agree 3-4 hour classes are rigorous for the student and the teacher.&nbsp; I am in a situation where I have 4 hours of teaching in my 1 hour break we have a staff meeting and then have 4 more hours of teaching.&nbsp; This happen 3 days a week.&nbsp; The 4th day I only have 4 hours of class and then finally I have 4 hours of catch up time.&nbsp; What happens is that I come in at least 90 minutes early just to be prepared.&nbsp; I am exausted.&nbsp; Can't wait for this semester to be over.</p>