The purpose of the current study is to examine school psychologists' assessment practices of children presenting with attention deficit/hyperactivity disorder (ADHD) symptomology using a case vignette. A random sample of 500 members of the National Association of School Psychologists is sent surveys; 246 are included in the study (49%). Results indicate some regional differences in the use of instruments and procedures selected by the respondents based on the case vignette. The most commonly selected assessment instruments and procedures are reflective of an approach consistent with a best practice, ongoing problem-solving process. Limitations of current practices are discussed. (Contains 4 tables.)