>>>students can see the content of other people's forms, while this is not appropriate.
If you set "Approval required"=Yes, but never Approve an entry, or simply remove the "Approve" button, then, students can't see others' entries.
If you set "Approval required"=Yes, but never Approve an entry, or simply remove the "Approve" button, then, students can't see others' entries.
>>>>My solution is to create one-person groups
No, you don't have to, it may not work with Database. Just do as above.