Do I have to tell my family my grades?
Why will you not tell them your grades?
No. I decided not to bring up grades because every time I do it obliges an unsolicited question about school; And if I do bring it up, they might worry too much, which is not my intention.
If keeping your grades private helps you out mentally in school and out of school, then I think it is fine. As long as you are performing well in school.
That's the plan. I don't want to deal with the family convo.
I think it is okay to have privacy about your grades and your family will respect you as long as you can graduate.