Table 2.9. Admissions aged 18 and older, by education according to primary substance of abuse: 2010 Percent distribution
[Based on administrative data reported to TEDS by all reporting States and jurisdictions.]
Education	All admis- sions aged 18+	Primary substance at admission
		Alcohol		Opiates		Cocaine		Mari- juana/ hashish	Metham- phetamine/ amphet- amines	Tran- quil- izers	Seda- tives	Hallu- cino- gens	PCP	Inhal- ants	Other/ none speci- fied
		Alcohol only	With second- ary drug	Heroin	Other opiates	Smoked cocaine	Other route
Total admissions aged 18 and older	1,687,887	403,652	319,360	254,871	154,352	104,257	42,757	238,804	109,480	14,997	3,870	1,374	4,465	1038	34,610
Highest school grade completed
0 to 8	8.8	8.5	7.9	12.7	8.5	9.6	10.1	7.8	5.4	8.8	7.0	7.4	11.2	7.6	8.6
9 to 11	23.6	15.7	23.8	23.2	19.7	28.7	24.8	34.5	30.3	19.7	20.5	24.0	39.6	19.4	21.5
12 (or GED)	42.5	42.2	42.8	43.6	43.1	39.8	40.5	41.5	45.0	42.2	38.5	42.7	37.0	40.3	43.7
More than 12	25.0	33.5	25.5	20.5	28.8	21.9	24.5	16.2	19.3	29.3	34.1	25.9	12.3	32.7	26.3
Total	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0
Admissions aged 18 and older	1,635,275	389,819	312,341	250,008	148,504	100,802	41,295	231,148	107,050	14,488	3,794	1,345	4,395	1021	29,265
SOURCE: Center for Behavioral Health Statistics and Quality, Substance Abuse and Mental Health Services Administration, Treatment Episode Data Set (TEDS). Data received through 10.10.11.