In that case a solution may be dropping grades altogether, exchanging them with some kind of written comment. This way "grades" can't be compared. Ultimately if

In that case a solution may be dropping grades altogether, exchanging them with some kind of written comment. This way "grades" can't be compared. Ultimately if you think about it, grades imply that knowledge can be measured, which isn't really something proven, and intuitively I'd say that knowledge can't be measured