About Digital locker : digital locker is a online safe system where you can store your file and that can be downloaded or can be take in use wherever you want .Its we can say storage of data online for further use anywhere where internet be available.

Here digital school locker means the same that student and teacher make files at school and store them online school safe and that files can be used at home or where they want to use them.

As we have information TeacherWeb Launches Digital School Lockers.

TeacherWeb Digital Lockers students, teachers and staff can store files
like homework, projects, and other files in a secure and remote
environment. That will later accessible by users from anywhere where internet is available.
Its features :
Virus scanning
Logging of all updates
Drop boxes for assignment submissions
The schools have ability to set file size limits ,regulate bandwidth; and
To determine which file types are allowed.