1) Middlinggrade 1) OK mark 2) Acrylic finish 3) Adequate grade 4) Apt mark in middle school 5) Arced letter 6) Aria area 7) Artichoke heart 8) Average 9) Average average 10) Average grade 11) Average mark 12) Bee chaser 13) Bee follower 14) Beginning of Christmas 15) Between bee and dee 16) Big bill, slang 17) Big section in a dictionary 
Consortium for Education Excellence
Centre for the Economics of Education
the letter C.