AbstractSchool teachers and administrators are often faced with the dilemma of deciding what level of an achievement test to assign a child whose developmental rate is atypical of his peers. It is not attractive to mismatch the developmental and achievement test level; however, alternative procedures often call for extra testing time. The ITBS has an out‐of‐level option which allows for a developmental/achievement test level match that does not require additional testing. Since the procedures used by ITBS to assign grade equivalent scores do not take grade level into account, questions have been raised about the interpretation of grade equivalent scores achieved from out‐of‐level testing. This research addresses the question of the comparability of equal scores on the same test from children in different grades. The results indicate that the scores are comparable and support the assignment of ITBS levels that match the child's developmenta