The evaluators of the RBS (Research for Better Schools, Inc.) Career Education Program were confronted with the need for an instrument which would assess student attitudes toward learning environments which were not limited to traditional school settings. This study reviews the development of the Assessment of Student Attitudes Scale (ASA). The ASA is a Likert-type instrument composed of 26 items grouped to yield four subtest scores and a total score. Data indicates that the ASA is both a reliable and valid measurement tool for the assessment of secondary-school-age students' attitudes toward learning environments. (Author)