It is not recommended that you enroll in remedial classes. My own personal experience. I started to sign up for three subjects in Wendeng. After attending the intensive political class, I felt that the effect was average, so I sold the remaining two. The intensity of class is strong, and I am tired. Objectively speaking, Wendeng's teacher is still good and standardized. But personally, remedial classes can only be icing on the cake at most, which will easily affect your review progress and arrangement. These counseling institutions have their own strengths, and we can't unilaterally say which one is the best. Like Wendeng, everyone feels good, Haitian politics is good, and others don't know much about it. Online courses are really not recommended, which is a waste of money. Look online, many of them sell videos of remedial classes.