방법 비교

	Classroom Observation Protocol	Value-Added Teacher Evaluation
분야	Education	Education
계열	Process / pipeline	Regression model
기원 연도	2009	2004
창시자	Teaching-measurement tradition (Pianta & Hamre CLASS; Danielson Framework; MET project)	William Sanders (TVAAS); methodological critique by McCaffrey, Lockwood, Koretz et al.
유형	Structured, standardized measurement of classroom teaching via trained observers	Statistical estimation of individual teachers' contributions to student achievement growth
원전	Pianta, R. C., & Hamre, B. K. (2009). Conceptualization, measurement, and improvement of classroom processes: Standardized observation can leverage capacity. Educational Researcher, 38(2), 109–119.	McCaffrey, D. F., Lockwood, J. R., Koretz, D., Louis, T. A., & Hamilton, L. (2004). Models for value-added modeling of teacher effects. Journal of Educational and Behavioral Statistics, 29(1), 67–101.
별칭	Standardized Classroom Observation, Observation Instruments for Teaching, Classroom Observation System, Structured Teaching Observation	Teacher Value-Added Models, VAM for Teachers, Teacher Effect Estimation, Value-Added Teacher Accountability
관련	4	4
요약	A classroom observation protocol is a standardized instrument for measuring teaching by having trained observers rate lessons against defined dimensions of practice. Unlike informal walkthroughs, validated protocols such as the Classroom Assessment Scoring System (CLASS) and the Danielson Framework specify what to look for, how to score it, and how to train and calibrate raters. As Pianta and Hamre argued, standardized observation turns teaching into something that can be measured systematically, studied for sources of error, validated against student learning, and used to improve instruction.	Value-added teacher evaluation uses longitudinal student test scores to estimate how much individual teachers contribute to their students' achievement growth, net of what students brought into the classroom. Statistically it applies value-added and mixed-model machinery — controlling for prior achievement and student characteristics, then treating each teacher's residual contribution as an effect to be estimated. Pioneered in Tennessee's TVAAS and scrutinized in a large methodological and policy literature, it became central, and controversial, in teacher accountability.