Thanks for that information. A photo on Facebook taken just a little more than a year ago of Redmond Sullivan shown standing with a grown woman indicates that this male individual probably has a big advantage over girls/women of the same age simply in terms of overall size and build.
But even if this HS athlete were the same exact height and weight of the female athletes he's competed against in girs' HS field events, as a male senior HS student who is probably 18 or so, he invevitably has huge natural advantages over even the tallest, heaviest and most well-muscled female field athletes in terms of overall muscle mass; bone size and denstity; grip, arm and upper body strength; heart and lung size and power; hemoglobin; tendon force capacity; and throwing power.
From the earliest ages for which USATF keeps records males consistenty outperform females by very wide margins in the throwing events.
The US national shot put record for males age 17-18 is 20.43 m / 67' 0½". The US national record for females age 17-18 is 16.41 m / 53' 10¼". And that's with the two sexes throwing very different weights. In high school, males throw a shot that weighs 12 lbs. - females throw a shot that weighs 8.8 lbs.
But as Redmond Sullivan will be at Wagner College in NY next year, Sullivan won't be competing in any CT HS girs' events.
Also, someone on the thread said earlier that Sullivan was planning to join the women's fencing team at Wagner. That might just be what the poster surmised; no source was given.
But tellingly, Sullivan's fencing records posted online show that in the same year he's been competing in girls' shot put and discus in high school sports, in fencing outside of school Sullivan has been competing in the Men's Senior division.
(From what I've read, in fencing Senior is an open division for those 13 and up with no upper age limit. There are more granular divisions for fencers in their pre-teen and early teens that are restricted to youths of one particular age (12, 13, for example). But those gradations wouldn't apply to Sullivan at this point anyways, because as a HS senior soon to graduate, Sullivan is probably at least 18.)