1. Key middle school: a school with high education and teaching level and high social reputation in the whole country or province as determined by the Ministry of Education or the provincial people's government.
2. Ordinary high school: refers to the middle school that implements general education and teaching in accordance with the national middle school curriculum standards.
3. Vocational high school: refers to the middle school that implements vocational education and teaching in accordance with the national curriculum standards for secondary vocational education.
4. Ethnic middle schools: refer to schools that implement ethnic middle school education and teaching in accordance with relevant state regulations.
5. Special education schools refer to schools that provide educational services for the disabled.