What is the highest GPA you can get in Jr high?

The grading system can vary between different Junior High schools, but typically the highest GPA that a student can achieve is somewhere between 3.9 and 4.0. This usually corresponds to receiving all "A" grades or equivalent in one's classes. However, it's essential to refer to the specific grading guidelines provided by your school or district to confirm the accurate GPA scale and highest possible GPA they calculate.