The scores of college courses are calculated by weighting the usual scores and the final exam (homework) scores (usually 30% at ordinary times+70% at the end of the period), and at most one roll call will affect the usual scores.

There are many teachers who are not very serious and responsible. When they finally calculate their grades, they won't show so many students how many times they are late. Therefore, let the teacher know about you and think that you are a studious student, and your overall impression will be good and your grades will be high.