Table 7. Percentage of adults reporting zero dollars in expenses for adult learning activities and median out-of-pocket expenses for adult learning activities, by type of learning activity: 2004-05
Learning activity	Number of adults (thousands)	Expenses per activity
		Tuition and fees		Books and other materials
		Percent reporting $0	Median	Percent reporting $0	Median
English as a Second Language classes	1,965	44!	$29!	48!	$20!
Basic skills or GED preparation classes	2,822	80	0	61	0
Part-time college or university degree or   certificate programs	8,421	18	1,144	22	294
Part-time vocational or technical diploma,   degree, or certificate programs	2,405	44	218	49!	8!
Apprenticeship programs	2,508	64	0	77	0
Work-related courses or training	57,004	73	0	88	0
Personal-interest courses	45,387	48	19	68	0
!Interpret data with caution; coefficient of variation is 50 percent or more. NOTE: The distributions of out-of-pocket expenses were highly skewed for each learning activity; as a result, medians are reported instead of means. SOURCE: U.S. Department of Education, National Center for Education Statistics, Adult Education Survey of the 2005 National Household Education Surveys Program.