This makes me laugh because not too long ago I received a note like this from my son Jake. Instead it said,"Thank you Mom for paying for my tuition and making sure we have food. You just have to love them!
"Education is important, but big biceps are importanter" is not wrong because "importanter" is not a word, there also needs to be a period and education needs to be capitalized. Grammar win: Education is important, but big biceps are more important.