Your sandbox site is a place where you can try out different settings, create new grading scales, etc. without affecting any of your real data. You can get to it by putting ".sandbox" in the middle of your school's normal URL: https://yourschoolname.SANDBOX.schoolrunner.org.
The sandbox a completely separate version of your Schoolrunner site, so any changes you make will not affect data on your production (regular) site.
Sandbox sites are not updated in real time, meaning that data entered in your production site do not immediately appear in sandbox. If you notice that information is too out-of-date in your sandbox site, contact your Schoolrunner administrator or School Happiness Coordinator to have the latest production data copied into your sandbox.
If you are practicing or experimenting in Schoolrunner, be sure that "sandbox" appears after your school name in the URL to ensure you're not making changes to your production site. To further distinguish sandbox sites from production sites, there is a dashed yellow border around the window in sandbox sites, along with a banner.
Log into your sandbox site with the same username and password that you use on your production site. (If your credentials don't work, your account may have been created after the last update was made, meaning your account didn't exist yet and thus was not copied over! Contact your Schoolrunner administrator to rectify this.)