Based on the Epstein School's student badge learning program, research is published showing a correlation between student motivation, digital badges and a strong alternative assessment tool
Making Community Connections (MC2) Charter School, a QED model of transformational learning -- Take a look at the design of this school and how they use competency-based learning for both student learning and staff development.
Wonderful window into the Quest to Learn school modeling how game-based learning engages students, feedback is ongoing and immediate, learning through play, engagement, supercharged about the learning, etc.
Love the structure of this competency and mastery-based program at Coastal Carolina University. Secondary schools could use the rigor outlined here to prepare our students for college and beyond.
This site has a lot of good information and is just right for Middle School students. Grade 5 students can also use it but would need a little more guidance.