American schools begin in September after a long summer holiday. There are two terms in a school y

American schools begin in September after a long summer holiday. There are two terms in a school y
　　American schools begin in September after a long summer holiday. 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 begin to go to school
when they are five years old. Most children are seventeen or eighteen years old
when they finish high school.
　　High school students take only five or six subjects each term. They usually
go to the same class every day, and they have homework for every class. After
class, they do a lot of interesting things.
　　After high school, many students go to colleges. They usually have to pay a
lot of money. So many college students work after class to get money for their
studies.
1.How many months are there ina summer holiday in America?
2.When do must American children begin to go to school?
3. How many subjects do American high school students take each year?