Announced at an assembly, recognized at a school board meeting, I got out of a class or two the day I found out. 4 in a district with ~1600 graduating seniors.
Our school (independent, with relatively diverse socio-economic) does not do any special recognition beyond a short mention on our website for NMSF (and linking to the press release). Counselors very quietly distribute certificates. There is no recognition of NMF (at least nothing I’ve seen over the past 4 years.) It’s kind of the culture of the school – there are a lot of excellent students who excel in many different ways, and it seems our school tries to be neutral on recognition.