freebeer
It looks to me like school grounds not mapped in OSM where this note is sited.  Whatever it is, the area is unmapped so far.
There is one building now mapped, added by yurasi in response to mapbox customer feedback.  This building (and those so-far unmapped nearby on the grounds including baseball pitch and smaller carpark) are as yet unnamed.  That is what yurasi  is asking, which is what a customer had claimed is the high school.