This document discusses various models and approaches to evaluation, including formative and summative evaluation. It describes models such as Tyler's goal attainment model, Stufflebeam's CIPP model, Scriven's goal-free evaluation, and Provus' discrepancy evaluation model. The document outlines steps and considerations for evaluation in areas like curriculum design, teacher use of curriculum, pupil outcomes, and curriculum systems. It also provides examples of evaluation criteria and compares different evaluation approaches.