There is no saying that there are several national open universities, so there are not several national open universities at all, and only ordinary universities have the saying that there are undergraduate batches. The National Open University implements a complete credit system. Students who have completed the required credits are valid for 8 years after registration. If you want to search for the answer, you can refer to RTVU students who have completed the total graduation credits stipulated in the teaching plan, passed the practical teaching link and met the requirements of ideological and moral appraisal, that is, they are allowed to graduate and issue a higher education diploma with nationally recognized academic qualifications. Undergraduate and junior college students will be awarded graduation certificates by the National Open University. Undergraduate students who meet the conditions for conferring a degree can obtain a degree certificate.