Extended time for testing is frequently recommended despite the possibility that it may have unintended negative effects. Test process data, now commonly available "via" computer-based testing programs, can offer objective information about who uses and experiences higher scores when using more than typical testing time. NWEA MAP test process data from five school districts were analyzed to identify which students deemed eligible for extended time actually used more than typical testing time, and who obtained higher test scores when using more than typical testing time. Findings indicated many eligible students did not use more than typical testing time, but many students who did use it obtained their highest test score when using it. Implications are discussed, including how IEP teams could incorporate test duration data as part of a process to better identify specific educational strengths and needs for individual students.