Found this article from last year on schools and their peers. This data is usually a long search through school Office of Instutional Analysis websites, but this piece has all the data in one interactive tool. Basically, everyone thinks they are peers of at least 1 Ivy, and the DeVry's and Phoenix's of for-profit education are dreamers. It also shows which schools have chosen each other:
Article
Peers Interactive Tool
When you select a school a list data appears on the right. For example, for Buffalo it shows:
Colleges Selected As Peers Buy This College
(11) Rutgers, Stony Brook, UC-Irvine, UCLA, UC-San Diego, Iowa, Michigan, UNC, Pitt, Washington, Wisconsin
Colleges That Selected This College As A Peer
(30) Clarkson, ECU, Florida St, George Mason, IUPUI, Iowa St, RIT, Rutgers, Albany, Stony Brook, SDSU, Arizona, Colorado, Colorado Health Sciences, UIC, Louisville, Michigan, Mizzu, UMKC, New Hampshire, North Dakota, Pitt, Rhode Island, UT-Dallas, UTEP, Virgina, Virginia Tech, Wayne St, West Virginia, Wisconsin
Peer Colleges That Also Chose This College As A Peer
(5)
Rutgers, Stony Brook, Pitt, Michigan, Wisconsin