In the USA，children start school when they are five years old．In some states they must stay in school1 they are sixteen．But most students are seventeen or eighteen years old when they2 ，secondary schools．There are two kinds of schools in the USA：public schools and private schools．3 children go to public schools．Their parents do not have to4 their education because the schools5 money from the government．If a child goes to a private school，his parents have to get enough money for his schooling．Some parents still6 private schools though they are much more expensive．
Today about half of the high school students7 in universities after they finish secondary schools．A student at a state university does not have to pay very much if his parents8 in that state．
Many students9 while they are studying at universities．In this way they get into10 working habits and live by their own hands．
