One year. You can exchange in one or two years, and you can find a counselor in this major. According to the regulations of the Ministry of Education, the certificate of completion can be extended for one year if it is replaced by a diploma. But some schools can postpone it for two years. Xue Xin's student status. Com only shows the student status, and the graduation certificate has the legal effect of the country. Now the school first declares all graduates as graduates, and then asks the whole class to reissue their diplomas, that is, the diplomas are exchanged for diplomas. However, graduates have lost their own extension time, that is to say, if graduates fail another subject, there will be no opportunity to postpone the renewal of their diplomas.