It is difficult for soldiers to enter military schools, and the competition is great. There are basically no remedial classes.

Examining military schools can be said to be the best way for ordinary soldiers to become officers, but the number of places in military schools is very limited, and there are only a few places in a regiment (generally about 1000 people). There are even some special cases of taking advantage of loopholes and entering through the back door. So it's not easy to get into a military school.

Secondly, the situation of the remedial classes for military school entrance examinations. First of all, the army is a relatively closed place, so it is impossible for soldiers to attend social remedial classes regularly and for a long time, and it is impossible to hold grass-roots remedial classes for soldiers within the army. Generally speaking, some officers, college soldiers or resident high school teachers will be asked to do voluntary counseling a few months before entering military schools. My high school physics teacher did this. I asked him to give a general lecture for two weeks in physics class for three years in high school, and the effect of counseling can be imagined.