The steps to change a course name or title in Power School for Mac users are:

  1. Open up your PowerTeacher Gradebook 
  2. Preferences
  3. Section
  4. Customize Course Name

It might be a little different for a Windows PC user. See attached for those steps. 

Note: as of Nov 2016 this does not apply to PowerTeacherPro; however, those tools are coming.