In the United States, children start school when they are five years old. In some states they must stay in school  u     they are sixteen. Most students are seventeen or eighteen years old when they l     high school. There are  t    kinds of school in the United States: public school and private school.  M     children go to public schools. Their parents do not have to  p    for their education because the schools receive money from the government. If a child goes to a private school, his parents  h     to pay enough money for his schooling. Some parents still choose private schools, though they are much more  e   .
Today about half of the high school students go to universities  a     they finish the high school. A student at a state university does not have to pay too  m     if his parents live in this state.
But many students work while they are studying at universities. In this way they can have good working habits and live by their own  h    .