code   2/14    3/14    4/25   final   grade
       (60)    (60)    (50)    (90)
----   ----    ----    ----    ----    ----
dune	32	55	20	55	D
fact	49	55		73	B
foot	30	43	32	80	C
half	57	57	48	81	A
idea	44	60	45	77	A
just	51	51	41	86	B
more	52	61	45	88	A
note	51	58	42	84	A
plum	44	58	48	89	A
pool	54	55	45	82	A
rock	51	56	33	68	B
star	20	34	32	34	F
wave	33	44			F
well	55	58	50	85	A