such information is critical for knowing whether the school system is delivering good performance and for providing feedback for improvement a comprehensive system of evaluation is a requirement not only for the development of improvement strategies al all levels teacher school administration but also for measuring the success in achieving the goals of reform and for establishing a regime of accountability evaluations and assessments are requirements for an equitable regime of accountability efficient management effective decentralisation and for devolution of autonomy to individual schools oecd a without such information it is difficult to monitor the performance of schools and students and measure the achievement of learning objectives