Educators struggle with "value-added" teacher evaluation models based on high-stakes student assessments. Despite validity and reliability threats, these models evaluate university-based teacher preparation programs (TPPs), and play a role in state and professional accreditation. This study reports a more rational value-added evaluation model linking student performance to teacher candidates' lessons during Practicum and Student Teaching. Results indicate that K-12 students showed learning gains on these lessons, with mixed findings on comparisons of part-time to full-time internships, academic and functional lessons, and candidates' grade point averages (GPAs). Results indicated that teacher candidates' lessons are a viable value-added model (VAM) alternative for TPPs.