The general situation of the time required from primary school to university: 6(5) years in primary school+3(4) years in junior high school+3 years in senior high school+4 years in undergraduate course = 65438+ 6 years in primary school+3 years in junior high school+3 years in senior high school+4 years in undergraduate course = 15 years. If the college entrance examination is 3+2: 6(5) years in primary school+3(4) years in junior high school+3 years in senior high school+3 years in junior college+2 years in undergraduate course = 65438+ 2007 in graduate school: 6(5) years in primary school+3(4) years in junior high school+4 years in undergraduate course+3(2) years in graduate school.