Answer:

BPLUS

Answer	Crossword Clue
BPLUS	Highish grade
BPLUS	Solid grade
BPLUS	High 80s, roughly

BPLUS	It's close to 90
BPLUS	Good grade
BPLUS	Not quite an "A"
BPLUS	It's usually in the upper 80s
BPLUS	Almost excellent grade
BPLUS	Almost an A
BPLUS	In the high 80s
BPLUS	Above-average grade

BPLUS	Straight-A student's bane
BPLUS	Nearly excellent grade
BPLUS	High-80s grade
BPLUS	Grade under an A
BPLUS	Grade in the 80s
BPLUS	Grade less than A
BPLUS	College-transcript entry
BPLUS	Pretty good grade

BPLUS	Grade just short of an A
BPLUS	Grade just under an "A"
BPLUS	Summa cum laude spoiler
BPLUS	A, almost
BPLUS	High mark
BPLUS	School grading mark.
BPLUS	Good grade.
BPLUS	Good average

BPLUS	Just below 90
BPLUS	Nearly excellent
BPLUS	Nearly "A" material
BPLUS	Above average grade
BPLUS	88 or 89
BPLUS	Blemish for a straight-A student