Educational network authentication
If it is true, it can be used to educate online certification. If there is no school name in the certification list, the certification center will update the data in time to certify you.
School confirmation
If it is still unable to be certified, you need to confirm with the graduated school and let them report the data, otherwise you can only think that the certificate is fake.
Incomplete information
It is normal that other websites can't find information, because the information of secondary vocational graduates is incomplete, and other websites can't grasp it at all except the website of the Ministry of Education. The registration of secondary school students is different from that of high school, which is very loose and chaotic, resulting in confusion of graduation information. In addition, high school diplomas are issued at the provincial level, and secondary school diplomas are printed at the prefecture level, which is even more chaotic.
Confirm the legality of ... by a notary.
It would be much easier if the other school asked for notarization instead of certification.