Colleges with the highest number of football national titles?

I'm a big fan of college football and I'm wondering if anyone knows which colleges hold the most football national titles.

Sure, I can provide a list of universities that have a significant number of NCAA Football Bowl Subdivision national titles under their belt. Keep in mind that championships are claimed differently based on different polling systems, so the number can vary:

1. Princeton University and Yale University: These Ivy League schools claim the most national titles with 28 and 27, respectively. Most of these titles came in the early 1900s before the Ivy League stopped participating in Bowl games.

2. University of Alabama: Known for its powerhouse football program, Alabama has won a significant number of national titles. They formally claim 18, with a majority of these wins occurring after 1960 under Coach Bear Bryant and Coach Nick Saban.

3. University of Notre Dame: Not far behind Alabama, Notre Dame claims 13 national titles.

4. University of Southern California and University of Michigan: Both schools claim 11 national titles each.

5. Ohio State University: The Buckeyes boast 8 national titles, with the most recent one in the 2014 season.

Please note that these numbers can vary slightly depending on how championships are tallied. Each school often has its own method of counting national titles, and various polls and systems have existed throughout the history of college football. Always be sure to check the most recent and accurate data from reliable sources!