Which of the following is NOT true about education in the US?
A.
Some education observers believe that there is a return of university students' preferences towards traditional liberal arts and science majors since the second half of 1980s.
B.
In colonial era, the Puritans introduced policies of collecting taxes to support schools.
C.
Every child in America is guaranteed up to 12 years of education.
D.
In the US, secondary schools with different school boards may have different curriculum. However, most of them adopt the "core course + elective course" structure in curriculum design.