Between 1989 and 1992, methamphetamine use rates remained relatively stable. After 1992, rates nearly doubled, especially in western States. There were no significant differences in methamphetamine use across grade level, but males were more likely to use methamphetamines than females. Methamphetamine use among females, however, also increased. With regard to ethnicity and methamphetamine use, American Indians and Hispanics were more likely to use the substance, followed in order by Asian Americans, whites, non-Hispanics, and blacks. Compared to other heavily drug-involved youth, methamphetamine users were more likely to user other drugs and to suffer drug use consequences. Implications of the findings for research, prevention, and counseling are briefly discussed. 12 references, 5 tables, and 1 figure