The validity of the Self Concept as a Learner Revised (SCALR) inventory was studied. The construct issue of academic self-concept was explored by comparing the SCALR to the academic portion of the Multidimensional Self Concept Scale (MSCS). The SCALR contains 44 items (four scales of 11 items each). The SCALR version for grades 7 through 12 was administered to 1,136 eighth graders and 863 11th graders from schools participating in the Positive Attitudes in Tennessee Schools Project. The 150-item MSCS was administered to 287 students, 200 of whom had matching SCALR data. The SCALR and MSCS academic scores were compared, and correlation coefficients were obtained. Results indicate the SCALR inventory does have validity as a measure of academic self-concept, and significant correlations between SCALR and MSCS results suggest that both measure the same theoretical construct of academic self-concept. Three tables present study data. A 14-item list of references is included. (SLD)