I love the wins-above-replacement idea. Just reading by yourself sounds like a great "control" treatment. But some subjects, like math, are too hard to learn wi

I love the wins-above-replacement idea. Just reading by yourself sounds like a great "control" treatment. But some subjects, like math, are too hard to learn with just eyeballs moving across a page. Perhaps a math intervention could be measured as "how much better is it than letting the child loose on khan academy?" My TAG program in school was just us sitting around a table with the art teacher having inane discussions. Literally zero value added.