Here are 4:
A comprehensive systems of badges, trophies, points, XP, achievements. This uncovers nuance and is capable of far more resolution and precision than a letter.
2. Live Feedback
Here, students are given verbal and written feedback immediately–as work is being completed. Live scoring without the scoring and iteration. No letters or numbers, just feedback.
In this process, work is graded as it traditionally has been, then, through revision and iteration, is gradually improved and curated. Eventually “lesser” performance (as determined by students, peers, families, and teachers) is replaced by better work, but without the grades. Grades jump-start the revision process, and that’s it.
4. Always-on Proving Grounds (Continuous Climate of Assessment)
In this model, assessment never stops–the result of one assessment is another. Not tests, but demonstrations. It doesn’t stop, so rather than halting the process to assign a letter, the process continues on.