From the administrator account you can set grading criteria for all teachers at your school. For instance, you can define the grade periods for the current school year, as shown in the screenshot, below.

Once you have your grade periods defined, you can push these settings to all teacher accounts at your school with the click of a button, as shown below.

You can just as easily define which grading scales are available for teachers to choose from - or force all teachers to use a specific grade scale for all of their classes.

And you can set up behavior marks.