Wow, thank you so much! I am also so happy to hear that it works, and thank you for trying once again!
I will definitely add colors, thanks for the suggestion, I have thought about changing the size based on the grade but I forgot about it, using colors is much better!
And yeah, now that I think about it the key bindings aren't very good, I'll try to think of better ones. Maybe G for grades? I have no idea what made me use I...