American schools begin in September after a long summer vacation . There are two terms  in a school year: the first term is from September to January, and the second is from February to June. Most American children go to public schools . High school students take only four or five subjects at a time. They usually go to the same classes every day, and they have homework for every class. After class they have many activities. After high school, many students go to college. How many vacations do American children have each year?
One. Two. Three. Four.