How to Calculate Grade Point Averages for Homeschooled Students
If you’re homeschooling, you may not give your children traditional grades — many homeschoolers don’t. However, there may come a time when your homeschooled student enters public school or wants to apply to a college, so you need to figure out a grade point average, or GPA. To do that, follow the steps in the following list:

Assign a point value to the final grade.
Generally A = 4, B = 3, C = 2, D = 1, and F = 0.

Multiply the grade value by the amount of credit for that particular course.
This gives you the number of grade points for the course in question. To make it easy for everyone, most courses equal one unit. This gives a onesemester course that was worth one credit a final point value of 4 (assuming your stellar student got an A.)

Add all the grade points for the semester, year, or four years, depending on the span of time you want the grade average to reflect.
This gives you a total number of grade points. If your mythical stellar student takes two courses and gets an A and a B, the total grade points would be 7.

Divide the grade point total by the total number of classes.
This gives you a gradepoint average, otherwise known as a GPA. Your stellar student receives a GPA of 3.5 because 7 (the total grade points) divided by 2 (the number of classes taken) equals 3.5.