The average GPA for 6th graders is 93, the 7th graders is 2 more than the 6th graders and the 8th graders average GPA is 91.  What is the average GPA for the school?
The 7th graders average GPA is 2 more than the 6th graders GPA of 93 so 93+2 = 95
If you combine the GPA for all three grades then they have 93+95+91 = <<93+95+91=279>>279
The average GPA for the school is 279/3 = <<279/3=93>>93
#### 93