The arrival time of the certificate of case collection achievement of Shandong Teacher Education Network needs to be determined with reference to the specific case collection time and review cycle. Shandong Teacher Education Network regularly organizes case collection activities, which aims to provide a platform for teachers to learn, communicate and show, and is also an important way to select and commend excellent teaching cases. After the collection of cases, the review committee will review all submitted cases and finally produce excellent cases and winners. Teachers who participate in case collection can obtain case collection certificates to commend their participation and achievements. The specific arrival time of the certificate will be determined according to the audit cycle and the certificate preparation process, and it is generally necessary to complete the certificate preparation and mailing within a period of time after the audit. Therefore, it is necessary to pay attention to the official notice and consult the relevant departments to obtain the specific arrival time of the certificate.