A school with friendly and smiling staff, but
The complete disorganization of the school and the mess are:
1) students of completely different levels study in the same group because of this, students who try to gain knowledge will not progress;
2) the inclusion of students in the group is random, so this leads to what is written in item 1;
3) textbooks on which students study at school poorly reveal grammar, the whole grammar;
4) students at high levels do not have the knowledge to match this level, for example, pre-intermediate students do not know the meaning of Present simple, cannot compose questions, build negative sentences with it, etc. It remains to be guessed that they go there only for show, and their preparation leaves much to be desired.