In the book Qingshi Gao (The History of the Qing dynasty), you can see that in old China students did not go to fixed classes. They gathered together only for ceremonies and examinations.
遇釋奠、堂期、季考、月課，暫一齊集」的記載，可以知道清朝的學校並不講學、學生也不去學校，只有碰到祭典和考試，學生才聚集在一起。