Category	Heard	PPB	Easy %	Medium %	Hard %
Fine Arts - Classical Music and Opera	175	11.89	70%	39%	10%
Fine Arts - Other Arts	192	15.63	84%	55%	17%
Fine Arts - Painting and Sculpture	183	13.72	87%	42%	8%
Geography	70	16.71	84%	71%	11%
History - American History	172	13.66	89%	38%	10%
History - European History	172	13.95	87%	42%	11%
History - Other History	167	14.31	83%	48%	12%
History - World History	170	15.53	94%	46%	15%
Literature - American Literature	173	13.29	84%	42%	7%
Literature - British Literature	169	13.14	83%	40%	8%
Literature - European Literature	160	13.25	87%	38%	8%
Literature - World Literature	181	14.09	88%	49%	4%
Modern World	42	14.29	95%	43%	5%
Mythology	77	14.29	95%	35%	13%
Other Academic	90	13.00	90%	28%	12%
Other Culture	42	11.90	64%	43%	12%
Other Science (Astronomy)	28	12.86	93%	25%	11%
Other Science (Computer Science)	44	9.32	59%	32%	2%
Other Science (Earth Science)	23	6.09	39%	13%	9%
Other Science (Engineering)	12	16.67	92%	75%	0%
Other Science (Math)	59	12.88	92%	31%	7%
Other Science (Mixed/Any)	15	12.67	100%	27%	0%
Philosophy	146	14.18	88%	49%	4%
Religion	162	11.98	78%	33%	9%
Science - Biology	172	11.22	80%	24%	8%
Science - Chemistry	147	10.88	80%	25%	5%
Science - Physics	128	10.39	69%	27%	9%
Social Science	162	14.44	87%	49%	8%