Prime Archives in Education Research Are School Factors Important for Measuring Teacher Effectiveness? A Multilevel Technique to Predict Student Gains through a Value-Added ApproachDOI: 10.37247/PAER.1.2020.2Download Are-School-Factors-Important-for-Measuring-Teacher-Effectiveness-A-Multilevel-Technique-to-Predict-Student-Gains-through-a-Value-Added-Approach Share: Newer Post Teacher Informal Collaboration for Professional Improvement: Beliefs, Contexts, and Experience Older Post Edge Detection of an Image Based on Extended Difference of Gaussian