Guo Kai and open schools in Tianjin are superior to national open schools in terms of tuition fees and years of study. Display public information related to the query.

1.CDB University and Open University are public and private universities. The cost of public universities will be lower, while the cost of national universities and open universities will be higher.

2. It takes 2.5 to 5 years for the country to open, and 4 to 6 years for the National Open University. Both Cheng Kao and National Open University are nationally recognized academic qualifications. Those who meet the requirements can apply for a bachelor's degree certificate after graduation. When looking for a job, you can get the approval of the employment company. You can apply for the national civil service examination, postgraduate entrance examination and national judicial examination. Adult higher education is usually indicated on the graduation certificate of adult college entrance examination, and the national open university is indicated on the graduation certificate of national open university.