https://fredrikdeboer.com/2017/05/16/study-of-the-week-what-actually-helps-poor-students-human-beings/ "What’s shared by tutoring, small group instruction, cooperative learning, and feedback and progress monitoring – the interventions that come out looking best? The influence of another human being. The ability to work closely with others, particularly trained professionals, to go through the hard, inherently social work of error and correction and trying again. Being guided by another human being towards mastery of skills and concepts. Not paying tons of money on some ed tech boondoggle. Rather, giving individual people the time necessary to work closely with students and shepherd their progress. Imagine if we invested our money in giving all struggling students the ability to work individually or in small groups with dedicated educational professionals that we treated as respected experts and paid accordingly."