The grade is an eligibility criterion for the camp sessions. With this grade settings, you can allow/disallow certain age group children from registering for the camp sessions. 

You can access the 'Grade' option from two places, 

1. From the Camp module

Access Path : Center Dashboard > Camp > Setup > Grade

2. From the Setup 

Access Path : Center Dashboard > Setup > Camp/Event > Grade

Selecting the 'Grade' option (From either Camp or Setup module) will take you to the 'Grade Setup' page. Select the 'Add New ' option present on the upper right corner of the 'Grade Setup' page to add a new grade to the camp session.

Selecting the Add New button will open up a new dialog box labeled 'Grade Setup'. In that 'Grade Setup', you can enter 'Grade Name' and 'Status'.