I'm sorry, I know this sounds very low-tech of me, but high-school aged kids need an authority figure, who is clearly in charge, teaching them material. Lecturing in-person. Building relationships. I, for one, even at my age, cannot long burden myself with CBT. People just don't take it seriously enough. Let's face the reality of humanity: we are what robots will ultimately become, and some things are just better between humans than between a human and a computer.