Pupils who are diagnosised to be in ADHD condition if their rating scales from both parents or care takers and teachers meet the scores in The Optimal Cutoff Scores for Diagnosing ADHD of Dupaul (1998). Results: From February to March in 2010, 600 primary pupils in district 8, Ho Chi Minh City were chosen randomly for this surveillance, and 1, 200 questionnaires were collected from both their parents and teachers (including 600 from parents and 600 from teachers).