An assessment of the Student Perception of Teaching Effectiveness instrument (SPTE) is presented. The SPTE was developed to assess teaching interns' performance from the student's viewpoint. The Texas Teacher Appraisal System was selected as the content base for the development of the SPTE. The Texas system covers instructional strategies, classroom management and organization, presentation of subject matter, learning environment, and professional growth and responsibilities; the latter aspect was not addressed by the SPTE. This study sought to determine whether the SPTE provides useful information about the teacher's classroom effectiveness. The SPTE was administered to 480 secondary school students taught by 10 interns in an alternative teacher certification program. The SPTE's content validity was addressed through expert agreement; construct validity was explored with factor analysis. The SPTE was determined to exhibit content validity with respect to the state-required teacher observation system. However, the factor analysis yielded only a modest alignment of the empirical structure of the SPTE with the logically based structure of state-required teacher observation system. Ten tables, 3 figures, and a 62-item list of references are included. (TJH)