This study further examined the reliability and validity of the Learning Alliance Inventory (LAI), a self-report measure designed to assess the working alliance between a student and a teacher. The LAI was found to have good internal consistency and test--retest reliability, and it demonstrated the predicted convergence with measures of immediacy and rapport. The LAI enhanced the prediction of student learning beyond that which was possible only using measures of immediacy and rapport. Path analysis provided support for immediacy and rapport indirectly impacting student learning via their effects on the working alliance. Potential uses of the LAI in both research and applied contexts are discussed.