Yeah, CTCL schools are mentioned very often here - or at least some of them. There are several on the list that are mentioned less frequently (like Antioch, Hiram, Emory & Henry, Millsaps, Marlboro, and Southwestern).
But…@lostaccount is right. The organization is based upon a book Loren Pope wrote in 1996, and the list he gave in the book is different from the member organizations of the foundation today. The CTCL were deliberately selected as a group of colleges that provided excellent educations but were not very selective (note that selectivity and rigor are not the same thing). For example, Franklin & Marshall, Bard, and Grinnell all used to be on the list but were removed because they got too selective.
More importantly, though, the only thing that holds the schools on the list together is that they’re all small liberal arts colleges that are generally less-selective - generally - than some of the tippy top schools, but they vary greatly in quality. You’ve got places like Reed and Whitman, which are relatively selective and whose students have high grades and test scores. You’ve got great weird little places like Lawrence and Kalamazoo, both of which have acceptance rates of 70% or above but whose students have high average SAT scores and GPAs. There are a few colleges on the list that are less impressive in terms of the quality of their student body. It does seem, though, that the bulk of the list are colleges that are not competitive to get into - admitting probably somewhere between 50 and 70 percent of their applicants - but still manage to have mostly above-average student bodies and have an educational model centered around individualized student learning.
The one thing I WOULD be cautious about with CTCL (and any small colleges) are that many small liberal arts colleges are tuition-dependent colleges with small endowments. That means that they rely on continuing enrollment and maintaining the size of their student body in order to keep functioning - literally keep the lights on and pay the teachers. Earlier this year saw the Sweet Briar episode, and Antioch College - which is actually on the CTCL list - is a well-regarded SLAC that closed for 3 years because of a long history of financial struggles, and it’s not yet accredited again, although it should be by the end of 2016.