AT my school, students take around 11 subjects for a semester. There are usually four 90-minute classes every day. The school day can last until 3 or 5:30 pm depending on the day. The number of class hours depends on subject area. I have 10 subjects this year: biology, chemistry, physics, Spanish literature (文学), English, technology, mathematics, history, physical education and music. My favorites are Spanish and biology.