High school (ConceptTopic, 5)

From Compile Worlds

High school is one of the many phases of education in most/all countries. It's infamous for serving as one of the most influential parts of one's life, as many exciting events occur during this time, but it can also make your life hell. Due to this property, a vast number of anime are set in high school. High school teachers must be some of the most hardy people alive, with the stuff they have to put up with.

The high school phase can range in length from 3 to 7 years, depending on the particular area in question.