Several forest and outdoor schools run without a fixed campus: they meet at parks, trailheads, and farm sites that rotate through the year. Their dot marks a base or meeting point, not a schoolhouse.
Some homeschool hybrid programs don't publish a street address; families receive it after enrolling. For those, the dot marks the program's office or general area, and their card says so.
Online programs enroll Portland families from campuses elsewhere in Oregon, and some sit outside this map's frame entirely.
If a school matters to you, treat the map as the start of the trail: open its full profile and confirm where, exactly, your child would spend the day.