This paper proposes a framework for assessing the quality of education, based on the outcomes defined in educational standards. The author takes the view that educational standards reflect the mission that schools must fulfill. He explains that the classroom curriculum, derived from educational standards, must customize the learning process to respond to the teaching-learning environment. Defining quality as the extent to which the delivery of the school curriculum realises the learning outcomes defined in the educational standards, the author proposes that quality in education should be evaluated using two approaches: relative achievement assessment and absolute achievement assessment. In elaborating on the two dimensions of assessment on which the model is based, the author highlights the need for greater attention to be paid to values and attitudes in assessing quality of education.