I'm only replying to tell you this because you mentioned being a non-native speaker of English, but, typically, in English, "grade school" is what comes before "high school," which typically starts at 9th grade. The fact that we refer to students by the "grade" they're in in high school as well doesn't mean anything. Saying you have "just grade school" implies you dropped out of high school.

> Saying you have "just grade school" implies you dropped out of high school.

And that is exactly what I meant.

One of the other things that a liberal arts education teaches you is to take criticism gracefully. Just a thought.

But not how to give it gracefully, apparently.