Dameijia software is not free, and its company needs funds to operate. The main functions of the academic situation App under Dameijia Education Technology include performance inquiry, academic evaluation and subject diagnosis. Because Dameijia software is not free, its company needs funds to operate, so it needs to pay when using functions such as performance check. Damei's teaching diagnosis &; Quality monitoring platform, personalized question bank management system, learning situation App, homework library management system and other related derivative products are big data intelligent teaching management and resource sharing platform systems launched by Dameijia Education for the needs of daily examination, homework and other process evaluation in schools.