I'm at Parkland College (for a few decades) helping folks navigate developmental courses/placements (but fighting the "hey, 5% of these folks could pass college so we should just get rid of developmental teaching" trends) dreaming of structured paths for building understanding *and* fluency instead of "I don't have time to teach you, here's a calculator."
See https://docs.google.com/document/d/1jvTlNmNI7nC9xMrVp2cc3d5RjWnpho0exwA_t86eWbI/edit?usp=sharing