I think that bringing ACT prep to schoolhouse would be a great idea: it's an excellent way to reach out to new learners, as the ACT currently has about 45% market share and is the test of choice in the midwest and southern US. Also, there's possibly even more demand for free prep in this area, as no ACT equivalent for Khan Academy's free and accessible SAT prep exists. We could certify tutors using ACT scores, and have a few tutors leading an initiative to gather resources, train tutors, etc.