This is what HS coaches and athletes don’t get. Yes, sometimes your high school high jumper is better than the school’s best high jumper--but neither of them can score significantly (if at all) in the conference or ever make it to the NCAA prelims, much less the National meet.
Teams rarely these days try to cover every single event. They want immediate impact scorers for the conference/prelim/national meet and athletes who can contribute in whatever event area(s) the team is focusing on.
ECU is about short sprints and hurdles and the coach has consistently made national-level competitiors out of 2 and 3-star level recruits (look back at the success he had at Campbell of all places!). 313 means that your kids averaged over 48 on splits--does that score in the American?