Generally, you don't need accommodation to attend weekend classes, but you need accommodation for summer classes, winter classes and pre-test training. Of course, if you are a local classmate, you can apply for not staying. How much is the accommodation? The accommodation fee for a day is almost 50-60, and a better one, such as a hotel, may be more expensive. Three meals a day is almost around 40 yuan, so the cost of accommodation for one day is 90 yuan, and the cost of summer vacation+winter vacation+exam is more than 5,000 yuan.
In addition, there are examination fees and clothes fees, which add up to about 5000.