Assessment means to sit beside and guide the next instructional steps of learning. We need to deeply involve the learner. It means having the students and teachers working together to improve learning.
Evaluation means to value, to judge. It is summative and should only occur at the end of the learning. It is done by the teacher.
Assessment = scaffolding /practice/practice/practice Evaluation = Showtime! - Sandra Herbst
Classroom assessment has the greatest impact on student learning and achievement of any educational innovation ever documented and is especially true for students who struggle and need additional instructional support. - Black and Wiliam 1998
Perhaps the question should be - Why do we keep assessing students in traditional ways?
