I did a little research and found that there are more DI schools playing "FIELD" Hockey than are playing Men's Ice Hockey.
Field Hockey:
http://web1.ncaa.org/ssLists/sportBy...amp;division=1
Ice Hockey:
http://web1.ncaa.org/ssLists/sportBy...amp;division=1
A minor sport when less than 60 of the 330+ DI schools play it.