Children face the college entrance examination, and their grades are not very satisfactory. There are remedial classes, but they have no effect. Do you have any good recommendations?

Why doesn't it work? Is the teacher's level not good, or is the child's learning attitude not correct and he doesn't want to learn? If it is the child's own problem, then first of all, actively enlighten and encourage him, so that he should not be too anxious to establish confidence, thus establishing his enthusiasm for learning; If you have the conditions at home, you can find one-on-one teachers to tutor different subjects. If you make up your mind to study, you should be able to improve a lot.