Both formative assessment and assessment for learning are intended to provide information early enough in the decision-making process to influence student learning. As traditionally conceived, formative assessment helps teachers group students more effectively and select appropriate instructional interventions. The teacher uses the assessment information. However, the litmus test of an effective assessment for learning is that it informs students about their own learning, helping them focus their learning energies where they are likely to be most effective. So formative assessment enlightens the teacher, while assessment for learning enlightens the student