Yeah that's a lot different from what I had.
Mine was credit hours so how many classes per semester would vary and varied based on one's degree they were seeking. Most courses were probably 3 credit hours each but then you'd have 1 credit hours, 5 credit hour, 6 credit hour, and so on and all in between. My husband averaged 18 credit hours per semester (which is considered a lot), I averaged 15 credit hours but again courses varied in the amount of credit hours. Full time student was considered at least 12 credit hours.
It went start of Fall semester, Fall Break (like 2 days off), Thanksgiving Break (like 3 days off), Winter Break (usually a month), start of Spring semester, Spring Break, end of Spring semester, summer semester and repeat.