Thousands of U.S. school districts and many international schools use MAP® Growth™ to monitor the academic growth of their students and to inform instruction. The MAP Growth assessment is untimed, meaning that limits are not placed on how much time a student has to respond to the items. However, to help schools understand the amount of time MAP Growth assessments typically take, this document presents tables depicting the average MAP Growth testing durations by content area and grade based on aggregated test durations from student tests during the 2016-17 and 2017-18 school years. The tables are intended to provide educators with general ranges that indicate how long students normally take to complete a MAP Growth assessment, as well as the normal differences in test duration across terms. They are based on the measured test durations for all students who took MAP Growth Mathematics, Reading, Language Usage, and Science assessments in 2016-17 and 2017-18. These tables show the mean test durations, median durations (50th percentile), extremely long durations (90th percentile), and extremely short durations (10th percentile) by testing season, content area, and grade. The tables also provide the average test durations for Spring 2017 high-performing students (i.e., students in the 90th achievement percentile and above) in Mathematics and Reading, as well as the differences in durations between testing seasons.