I would argue that nothing is more destructive for academic and intellectual activities than what you propose. It immediately replaces the ideal result, which

I would argue that nothing is more destructive for academic and intellectual activities than what you propose. It immediately replaces the ideal result, which is a true assessment, with a feelings-based assessment, and it undermines academic honesty for all students. What must be done is to teach the students that failing an exam is OK, and help them recover the learning mindset. Evaluations are intended to measure the things learned and the things that need to improve. Evaluations are not a punishment.