Evaluation involves measuring student progress towards goals and determining new goals based on learning. It provides feedback to students and teachers, and helps improve the teaching and learning process. Evaluation should be done according to pre-decided goals and the needs of students. It is more comprehensive than examinations and includes qualitative evidence and value judgments. A shift towards constructivist teaching requires a new model of evaluation, such as open book exams, which test higher-order thinking rather than memorization. Open book exams will change student and teacher behavior by encouraging understanding over rote learning and more active, discussion-based teaching.