1. 1. US Department of Education, National Center for Education Statistics, Revenues and Expenditures for Public Elementary and Secondary Education, Statistics of State School Systems, and NCES Common Core of Data survey . Table 41. Average daily attendance in public elementary and secondary schools, by state: 1969-70 to 1999-2000 . Prepared: 2002 . Available at: http://nces.ed.gov/programs/digest/d02/dt041.asp. Accessed November 1, 2006.
2. Patterns of Student Drug Use
3. Adolescent Involvement in Legal and Illegal Drug Use: A Multiple Classification Analysis