I find it somewhat odd that modern medicine don't screen for stuff like sleep apnea or ADHD (and similar). They're quite frequent (sleep apnea - 17% from the article, ADHD - 5-20% depending on the study) and impact peoples' lives quite severely both on quality and productivity fronts.
Both are expensive to diagnose. ADHD also has a problem in that a wrong diagnostic can harm people.
Withings device mentioned in the article costs around 170$ and probably could be shared beyond few times use. Is it that expensive?
ADHD is very visible in certain cases (and still not diagnosed) and probably could be screened on class level with normalized questionnaires. Hand results over to parents and let them decide if they want to pursue diagnosis or not.