After your classes are set up, you can share them with a colleague by clicking on the tab "Share My Class." 

By checking the "share" box for each class on the right-side column, and then clicking "save," you will give access to the selected classes to other teachers in your school. After the class is "shared," other teachers will see it in the list of available classes to set up.

The teacher who shares the class is considered the primary teacher of that class and it is their name that will be on the NYC FITNESSGRAM student reports.