For the many people questioning this, I'm pretty sure you refer to Direct Instruction: https://www.nifdi.org/what-is-di/di-vs-di.html https://www.nifdi.org/wha

For the many people questioning this, I'm pretty sure you refer to Direct Instruction: https://www.nifdi.org/what-is-di/di-vs-di.html https://www.nifdi.org/what-is-di/di-vs-di.html Research is available there if you click the "Research" tab. The main research seems to be Project Follow Through: https://www.nifdi.org/research/history-of-di-research/projectfollowthrough.html https://www.nifdi.org/research/history-of-di-research/projec...