Our Summer starts December 1st actually.
Basically we all start at the beginning of the year (I start Uni in late February while the school kids would start around January 20th) and finish around November. Primary and high school is divided into four "terms" which usually go for 8-10 weeks, each separated by a one or two week holiday. Uni is split into two semesters, semester one finishes in June or something and we got 6/7 weeks holiday, and semester two finishes in early November.
The American school year pisses me off it's so dumb. And I hate how y'all call Uni and College "School" like wtf

when you say "school" I just assume you are talking about high SCHOOL or middle SCHOOL whatever tf that is, or something.