This case study was done in partial fulfillment of a Master of Science in Education (M.S.Ed.) Graduate Course the participant-observer was completing. The participant-observer learned a lot about Dmitrov, the child in this study. Dmitrov was a 2nd-grade student who was diagnosed (late in the school year) with Attention Deficit Hyperactivity Disorder (ADHD). The participant-observer's final recommendations are as follows: (1) for this particular child to continue medication (Concerta) and (2) work to find the optimal dosage of Concerta for this child when he reaches 3rd-grade. Nine appendices are included: (1) Baseline Excel Document of Dmitrov's Interruptions; (2) Excel Document of Dmitrov's Interruptions on Concerta; (3) Dmitrov's Age; (4) Stanford Scores; (5) Post Bulletin Newspaper article; (6) Scholastic interest inventory; (7) Dmitrov's Report Card; (8) Dmitrov's Attendance Record; and (9) After School Academy (ASA) Survey/Questionnaire. (Contains 3 endnotes.)