I went 1 day a week to the gifted program for math only. We had a once a month 6 question math test, for all statewide gifted schools. And then after elementary school, I got in to a magnet school after an IQ test where taking Latin was mandatory
Did you see the second article I posted by chance?
This one confirmed the number of 17 people attending
https://www.nytimes.com/1999/07/23/us/kennedy-burial-overview-private-ceremony-sea-for-3-kennedy-plane.html