First of all, the teacher must audition. As for the advantages and disadvantages of teachers, I think any student can understand. After all, you have been dealing with teachers for more than ten years, at least you have learned to identify them. The second is to look at the management of institutions, because it involves many problems such as curriculum arrangement, absence from classes, and even refund of fees, including of course the charging standards, because there is no unified standard.

You can only refer to the general market, so you can't simply judge whether it is expensive or cheap, it depends on the cost performance. Then ask other students in the class. Although the answer may not be objective, it can still reflect some questions.

Just call and ask about the price and schedule. The trouble is "teacher's character" and "class quality", which is actually very simple. Just sign up for an audition class.

If the classroom atmosphere is good and you like it very much, then the teacher's personality is in tune with you, and you will get along well in the classroom in the future (forget the out-of-tune teacher, poor Japanese learning will affect the big goal of studying abroad).

After an audition class, take stock of your gains. If you have gained enough, and the teacher has understood and mastered everything in the class, then the quality of the class will pass. If you don't talk about anything, or don't know anything, it will seriously affect the learning progress and disrupt the rhythm of the whole study abroad plan.