You can disable students timetables and homerooms from the parent connectED account either from the board level for all schools or one school at a time.
Board level > more tools> security>edesmbli connect> go
Click on settings> edit the page
Make sure the following permissions are unchecked if you don't want the parents to see this information in connectED > save
Say Yes to this popup to push to all schools
You will need to enable this permission again if you wish to have this visible to the parents.