One set refers to the entry level and the other to the advanced level.
The key approach of the government had been to offer accreditation to a variety of existing training institutions, which could be brought under the responsibility available through a certificate awarding system comparable to the formal system of education. With the expected increase in the number of open schools throughout the country and the awareness about the efficacy of the open learning system to reach very large numbers call for innovative approaches to be developed and used over the coming years. Therefore the government
later widened its scope to the following levels and ed are:-
At post advanced level, facilities have been created by the government for training in :
Instructional skill (Pedagogy),
Entrepreneurial skill (Business Services) and
Supervisory skills (Supervisory Techniques & Practices).