Circa late 2015, early 2016, my cofounder and I spent ~6 month attempting to build exactly this. Our hypothesis was that students self studying for the SAT use

Circa late 2015, early 2016, my cofounder and I spent ~6 month attempting to build exactly this. Our hypothesis was that students self studying for the SAT used books (eg Kaplan) but the solutions in the back were poor in explaining how they arrived to the solution because they usually just cut to the chase rather than explaining the approach & helping you arrive to the solution. So we took each practice SAT math question and wrote out a solution spread over four swipeable pages. Our hope was that if you saw the first or second page, you'd arrive at the solution without having to see the answer, thus increasing your chance to solve it on your own next time. We spent over 100 hours tutoring kids and had them use our MVP to mild success. The obvious next step was to automate the solutions rather than hand write it ourselves - like GPT-4 has done here. As someone who has logged over 2000 hours teaching, there's a lot of soft nuances and tactics to tutoring. Also, motivation is a big thing a good tutor brings. I don't see this solution as quite there yet but getting close. Very optimistic here.