① The enrollment years of primary school, junior high school, senior high school and university born before 1 September 19991were 2006, 201year, 20 14 year and 20 17 year respectively.

② The enrollment years of primary schools, junior high schools, senior high schools and universities born after 1 September 19991are 2007, 20 12, 20 15 and 20 18 respectively.

Academic qualifications refer to people's learning experience of receiving scientific and cultural education and skills training in educational institutions. According to the education law and other laws and regulations and the relevant provisions of the state, academic education includes the following forms: primary school, junior high school, senior high school, junior college education, undergraduate education, graduate education and so on.

Among them, the academic certificates issued by colleges and universities (including the graduation certificate of higher education self-study examination) should be registered electronically (referred to as academic registration). Academic certificates are divided into graduation certificates and graduation certificates.

Primary school is a school where people receive primary formal education and an important part of basic education. Generally, children aged 6- 12 are of primary school age, and the length of primary education at this stage is 6 years.

Junior high school is the primary stage of middle school. Junior high school generally refers to a middle school with nine-year compulsory education, which is a transitional stage to senior high school and belongs to the category of secondary education.

Senior high school is a higher education institution after the end of nine-year compulsory education in China. It accepts qualified junior high school graduates, and the general academic system is three years, that is, senior one, senior two and senior three. Ordinary high schools, vocational high schools, secondary specialized schools and secondary technical schools all belong to the category of high school education.

Universities (colleges) are a kind of schools that implement higher education, including comprehensive universities, specialized universities and colleges. It is an organization with unique functions, an institution of higher learning that inherits, studies, integrates and innovates advanced academic knowledge, and is interrelated with social, economic and political institutions.

It is not only the product of the development of human culture to a certain stage, but also a unique culture gradually formed on the basis of long-term school-running practice through historical accumulation, self-efforts and external environmental influence.