In 2012, a NIDA-funded study reported that the following percentages of 8th, 10th, and 12th graders had abused these drugs at least once in the past year:
- Powder cocaine: 1.0 percent of 8th graders, 1.8 percent of 10th graders, and 2.4 percent of 12th graders
- Crack cocaine: 0.6 percent of 8th graders, 0.8 percent of 10th graders, and 1.2 percent of 12th graders
- Methamphetamine: 1.0 percent of 8th graders, 1.0 percent of 10th graders, and 1.1 percent of 12th graders
- Amphetamines: 2.9 percent of 8th graders, 6.5 percent of 10th graders, and 7.9 percent of 12th graders
- Nonmedical use of Ritalin: 0.7 percent of 8th graders, 1.9 percent of 10th graders, and 2.6 percent of 12th graders
- Nonmedical use of Adderall: 1.7 percent of 8th graders, 4.5 percent of 10th graders, and 7.6 percent of 12th graders