Many Bible colleges are accredited by the Association for Biblical Higher Education (ABHE), formerly known as the Accrediting Association of Bible Colleges (AABC). The ABHE Institutional Accrediation Standards located on their website or printed in their Manual are their standards for accreditation. Standard 10 is the one for "Library and Other Learning Resources."
The Association for Biblical Higher Education (ABHE) annually creates a compilation of statistics related to the libraries of their member institutions. These statistics can be used for the purpose of benchmarking.