3+4 school is an educational model. "3+4" school is a 3+4 higher vocational school, with a seven-year academic system, three years of technical secondary school and four years of undergraduate course. In the first three years, the school will organize 3+4 students to participate in the spring college entrance examination of the third year for a transitional examination, and only those who pass can enter the corresponding undergraduate colleges. It is an educational model implemented by secondary vocational education (secondary vocational education) schools and ordinary undergraduate colleges. The full name of "3+4" is "China-Ben Connecting Talent Training Plan", that is, three-year technical secondary school is transferred to four-year undergraduate course, and the front-end school (secondary vocational school) and undergraduate college jointly complete talent training, and the final graduation certificate is the academic certificate issued by undergraduate college. Undergraduate college entrance examination students pass the annual college entrance examination and enroll students in accordance with the number of national enrollment plans.