Category	Heard	PPB	Easy %	Medium %	Hard %
Auditory Arts	51	13.33	90%	28%	16%
Beliefs	67	13.73	82%	46%	9%
Current Events	28	16.79	100%	46%	21%
Fine Arts - Other Arts	44	12.73	89%	34%	5%
Geography	9	6.67	67%	0%	0%
History - American History	38	13.42	95%	34%	5%
History - Ancient History	28	13.21	79%	50%	4%
History - European History	40	13.50	83%	40%	13%
History - Other History	18	13.89	72%	67%	0%
History - World History	52	12.50	90%	25%	10%
Literature - American Literature	52	14.42	96%	35%	14%
Literature - British Literature	52	14.04	92%	37%	12%
Literature - European Literature	37	16.76	100%	43%	24%
Literature - World Literature	52	15.00	90%	46%	14%
Other Academic	14	8.57	86%	0%	0%
Philosophy	44	7.50	55%	18%	2%
Science - Biology	38	13.42	90%	37%	8%
Science - Chemistry	42	11.90	83%	29%	7%
Science - Other Science	48	12.92	81%	35%	13%
Science - Physics	42	14.05	91%	45%	5%
Social Science	73	11.92	78%	37%	4%
Visual Arts	51	15.10	92%	45%	14%