Classes and teachers are viewable in NetClassroom when schedules are not marked to be viewed. The information shows in Daily Grades and Averages since the classes in which the grade was received must show along with the grade received.
We resolved this issue in NetClassroom version 7.82.104, patch 2. Download and install the latest patch, which contains all fixes from previous patches. If you are running an older version, download and install the latest version and then the patch.