Huai' an teachers' examination and compilation is generally once a year. The number of times teachers prepare for exams in non-provincial unified examination areas is uncertain. Generally, cities, districts and counties organize their own examinations according to the number of teachers required. There will be a unified examination area and a non-unified examination area in the same province, so a province will organize teachers to prepare for the exam several times a year, and the number of times will be uncertain.