Those are their HS years. One applied last year and the other is applying right now.
Several colleges in CT (that S24 decided not to apply to) required the score. Maybe Quinnipiac or Fairfield or both? I think there were others but I don’t remember details because it was a few months ago when I looked. Also, while some schools didn’t require them, when we talked to AOs they often said they preferred to see scores or “other strong outside confirmation” of achievement for homeschooled students.