Most American children begin to go to school when they are five years old. American schools begin in September. There are two terms in a school year. The first term is from September to January, and the second is from February to June. Then the students have a great summer vacation. High school students have only four or five subjects each term. They usually have same lessons every day, and teachers don't ask them to do much homework. After school, they can do many interesting things like playing sports. Most students are seventeen years old when they finish high school. After high school, many students go to college . They can go to a small one or big one. They need a lot of money to go to college. So many college students work after school to _ . Most children go to college when they are   _   in America.
twenty seventeen fifteen thirteen