Like the others, I agree that all 3 types of assessment are good. However for me if I am to rank it, I will prioritize the assessment FOR Learning. I think this is the most valuable to students, this is helps them fulfill their potential. The information created through this can help both the students and the teachers know where are they in their learning. In effect, the teachers will use this information to know how to amend their approach to the students accordingly, example by supporting the students getting where they need to be. In this learning, students are actively engaged in their learning and they also learn the strategies they needed to maximize their own progress.