As long as the certificate of participating in the national organization is recognized, the most important role of the institution is to provide itself with a place to study, just like taking the college entrance examination or being in a university school. Of course, if you are uneasy about the institution you choose, you can also directly check with the Education Bureau whether you are registered. This is why I study in Peng Zhong. Those registered institutions are all qualified and formal, so if you don't know his home, you can also go to the Education Bureau to check whether they have teaching qualifications.