Training institutions are not as normal as paid annual leave. Teachers in training institutions come according to the course payment system. The difference between colleges and universities is that the quality of business determines the number of classes. The more you go to school, the higher your income. Working in an educational institution, it is not normal to have a holiday. Only when teachers attend more classes can students finish classes and institutions make money. Teachers have classes on holidays, and students are busiest when they don't have to go to school or work.