If the results are not satisfactory, it is better to do one-on-one, because large classes are mainly aimed at ordinary students, some of them are basic, and students are not paid enough attention. Moreover, one-on-one effect will be better at this time. Generally, one-on-one teachers will have a specific plan to help students like your child. Before you go, you can ask him how he will teach your children and what effect he may achieve.