First of all, you can look at the qualifications for running a school. Private education and training institutions are approved or registered by the education, human society and industrial and commercial administrative departments respectively, and are generally publicized in a prominent position in the company.
Secondly, it is more important to have teachers. General training institutions should have teachers of the same level. The best way is to go to the on-site audition and feel for yourself how this teacher is and whether the education method is suitable for you.
Finally, the establishment time can also be used as a reference project. Within 3 years of its establishment, it can basically pass. The establishment time of 5- 10 years basically shows that this institution still has a good reputation and influence in the industry and society. Such training institutions are relatively more reliable, at least without worrying about the sudden closure of the company.