In a daily classroom situation, the Study Buddy is used as follows:

The student independently takes the Study Buddy, whether or not after consultation with the teacher, and places it on his or her table.
The moment the student wants to concentrate better, for example when taking a test, he or she opens up the Study Buddy.
The moment the student wants to participate in the group process again, he or she folds the Study Buddy again.

The Study Buddy can simply remain on the table and the top can simply be used as a replacement table top.
The fact that the Study Buddy can simply remain on the table gives peace of mind in the classroom.