I'll agree with posts by numerous others. 7th-8th grade is a GREAT time to explore, perhaps face plant, or at least struggle enough to be forced into learning how to study. Grades in MS have zero bearing on any college application. Better to learn to struggle and persevere now rather then hitting that wall for the first time as a 1st semester Freshman in college.

Learning to learn is the most valuable thing one can accomplish in Middle School. Struggling, being somewhat frustrated, yet keeping after it and succeeding is what builds true self esteem.