The Atlantic Coast Conference has had three different schools reach the College Football Playoff for a total of eight appearances. That’s including Notre Dame as the Irish joined the ACC as a full-time football member only in the 2020 COVID-shortened campaign and reached the national semifinals along with Clemson.
Notre Dame still plays five ACC teams a season but is back to independent status. The ACC would crawl over glass to get the Irish full time, but that’s not happening anytime soon if ever.