The Adult ADHD Self-Report Scale screener is commonly used to determine if further evaluation of ADHD is required. However, despite use in college settings, the ASRS was not developed for this population, and limited relevant psychometric data exist. In this study, 190 college students completed the ASRS screener as well as a lengthier measure of the 18 DSM symptoms of ADHD. A subgroup (n = 141) completed the ASRS twice, with at least 1 week in between measures. Concurrent validity of ASRS scores was substantial (r = 0.73 with DSM inattentive symptoms and r = 0.57 with DSM hyperactive/impulsive symptoms) and test--retest reliability was adequate (r = 0.69 with an average interval of 42 days). However, the sensitivity of the screener was only moderate (66%), and approximately one-fifth of the students changed screening status (positive vs. negative) across the time interval. Implications for future research and practice are discussed.