According to the relevant information, the time is not uniform, usually one month to three months. The training class for young and middle-aged cadres is the most important class among the main classes of party schools of party committees at all levels. There are strict learning adjustment system, curriculum design, educational system arrangement, organization and management, party spirit training and inspection practice. The academic system of county-level party schools is not less than one month, provincial party schools are generally more than one and a half months, and central party schools are generally three months. Although the academic system is different, the training courses for young and middle-aged cadres in party schools at all levels are basically once a year.