Teachers! 80% of the remedial classes can't run because of the ghost of the teacher (remember, the teacher is much more difficult than you think. To exaggerate, this teacher has no personal relationship with you. 100% will play tricks, either by tricks or by brewing means. Think about it, you charge students 200/ hour, and you only give the teacher a few dollars. It's strange not to be jealous. )
More than 50% of remedial classes can't recruit teachers, especially suitable teachers, the day before the start of classes. If you are hiring college students to teach, you should pay more attention. Assuming that you need 10 teachers, you can recruit 30 teachers, and there must be spare teachers. The default cost of college students is zero, which is not negotiable! I broke my contract and didn't even send you a text message. There are many. Not to belittle the quality of college students. It's the same to you and me. If the default cost is zero, you will naturally feel at ease and enlighten yourself, and you can always find a high-sounding reason for your default.
I have been running a school for eight years. This is my real experience. Welcome to communicate.