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. Now many small and medium-sized enterprises have closed down in less than two years. The shorter the establishment time, the greater the risk.