In Smart School you can assign fees for each student by creating fees groups from Fees Collection > Fees Group then Fees Collection > Fees Master (create fees by selecting fees group here) and assign to student from Fees Master > Assign/view Fees. Please check the following documentation https://smart-school.in/docs/#feescollect for more understanding.
For student data access separation there is a Teacher Restricted Mode feature is available, by default teachers can access all student data but when Teacher Restricted Mode (System Settings > General Setting > Teacher Restricted Mode) is enabled then teacher can see only their assigned class-section or subject, student related data for different modules like Exam, Homework,
In Smart School avoid to enter or using special character (special character is non-alphabetic and non-numeric like @, #, $, <, %, ^, &, *, !) for any field like Student, Staff, Income, Expense, Transport, Custom Field etc, otherwise it may fail PHP or JavaScript processing.
