Parents of the HS Class of 2019 - 3.0 to 3.4 GPA

My S19 is ADHD and has motivation problems. Not even interested in looking at colleges yet. 3.2 GPA, although this will likely go down a bit this year, 1360 PSAT, 32 PreACT. No interests outside of video gaming and online political satire. I’m new to all this, but I want to try to learn about what to keep track of, especially since he is not focused on keeping up with this whole process.