The quality of the training course has been tested by the market, and it will definitely be eliminated by the market if it is not done well, so the answer is obvious.

Generally speaking, I think the quality of training is reflected in the following aspects:

Training pass rate, whether the trainees have achieved good results;

Whether the training system is scientific and what is the experience of training teachers;

Training is a service process, whether the service is in place;

Students' reputation.

I hope it helps you.