"By adolescence, these chronic and cumulative experiences with school failure, learning disorders, school misbehavior, and sometimes lower intelligence begin to

"By adolescence, these chronic and cumulative experiences with school failure, learning disorders, school misbehavior, and sometimes lower intelligence begin to generate other adverse educational outcomes. For instance, the academic outcome of the hyperactive (ADHD) adolescents was considerably poorer in Barkley and Fischer’s Milwaukee follow-up study at the teen follow-up than that of the typically developing adolescents followed concurrently. At least three times as many hyperactive (ADHD) children had failed a grade (29.3 vs. 10.0%) or been suspended (46.3 vs. 15.2%) or expelled (10.6% vs. 1.5%) (Fischer, Barkley, Edelbrock, & Smallish, 1990). Others have also identified such high educational risks in longitudinal studies dating back as much as 40 years (Ackerman, Dykman, & Peters, 1977; Mendelson, Johnson, & Stewart, 1971; Stewart, Mendelson, & Johnson, 1973; Weiss, Minde, Werry, Douglas, & Nemeth, 1971; Wilson & Marcotte, 1996). In another sample of clinic-referred teenagers with ADHD, a similar risk for school retention and suspension was documented (Barkley, Anastopoulos, Guevremont, & Fletcher, 1991). Almost 10% of the hyperactive sample followed into adolescence had quit school at this follow-up point in the Milwaukee Study, compared to none of the normal sample (Barkley, Fischer, et al., 1990). Fischer and colleagues (1990) also found that the levels of academic achievement on standard tests were significantly below normal on tests of math, reading, and spelling, falling toward the lower end of the normal range (standard scores between 90 and 95)." (Quoted from the 4th edition) ADHD IS real and really bad and it goes away on meds, your brain is underdeveloped 30% compared to your peers, in exec functioning. So if you're 18, you're at 12.5 on average. It's called Barkley's 30% rule. It's serious but responds great to meds, STOP believing the anti-adhd hype.