The fear I always have around companies like this is that you're playing a two-sided game, where you make money by convincing parents that it will help their kids in life but your actual work is trying to actually help the kids, and these two vectors point in different directions. It's easy to optimize for making money without actually helping the kids - the impact piece doesn't have a good feedback loop. If you want to help the kids then you'll have to rigorously measure whatever you can get your hands on, in order to improve the program.