If we have 180 days in our school year, then how many weeks are in my school year?
There are more calendar weeks than actual groups of five-day weeks. That is, you may divide 180 by 5, but because of the way school terms fall on the calendar, there will be more than 36 weeks during which school is in session for at least part of a week. However, no matter how they are arranged, there will still be 180 days on which classes will meet or tests administered.