Coach K, of Duke. I believe...
Urban Myer became the first coach to win 2 BCS National Championships. The Florida Gators head coach won the championship in 2006 & 2009.
princeton
Coach McDonnell to retire after earning 42 national titles
Arkansas only has one national championship and that was in 1964 under coach Frank Broyles
Larry Kehres, of Mount Union College, Division III, with 9 national championships.
Urban Meyer (2006 & 2008)
None
Charlie Weis, tied with many others: zero.
Les Miles-2007 Nick Saban-2003 Paul Dietzel-1958
Nick Saban of Alabama.
There is generally no schooling requirements to be a bowling coach. If you are looking to be a coach for a public school, they may have requirements to be on staff.