1, different standards: At present, there is no complete classification standard for off-campus training programs in China, and there are differences in classification and identification standards among regions, institutions and even personnel, which leads to a certain degree of uncertainty in the identification results.

2. Inconsistent identification methods: There may be subjective factors in the classification identification of off-campus training programs, such as differences in evaluation methods such as institutional qualifications, teaching staff, and curriculum settings. This can easily lead to the uncertainty and controversy of the results.

3. Vague laws and regulations: Although the State issued the Opinions last year, the implementation rules and relevant regulations are still being improved. Therefore, in the absence of relevant policies and regulations, it is difficult for training institutions and parents to clearly grasp the standards and accurately judge the legitimacy of off-campus training programs.

4. Difficult governance: At present, there are still many chaotic phenomena in the off-campus training market, among which crowded people, traffic congestion and other phenomena are prominent, there are many types of training institutions, and the state's supervision and clean-up efforts are not enough, which also increases the difficulty of classification and identification.