how to remove the course title from the class name? .

how to remove the course title from the class name? I do not need the students to see they are doing 4th grade work when they are in higher grades. I named the class appropriately and when I chose a reading program with five sections, the program name was automatically added (not by me) to the title of the class. Now very encouraging to the students. Please help me remove the  "BETA: 4th grade reading & vocabulary" from the class title.

Thank you very much.