...
Certifying your IdP or SP for R&S is easy, although SPs do require a review period to verify compliance with the requirements. See How to Apply for the Research and Scholarship (R&S) Entity Category for details. For more information specific to IdPs and SPs, see:
...
When the R&S Category was first introduced for InCommon, it was available only to InCommon Participants. When REFEDS created the global Research and Scholarship Entity Category described in this document, therefore, InCommon-only R&S lost most of its relevance. All InCommon-only R&S SPs were converted to global R&S automatically, but due to changes to the requirements, that could not be done for IdPs. (See Migrating an IdP to Global Research and Scholarship for additional historical context.) InCommon-only R&S has been deprecated and is no longer issued to IdPs or SPs, but a number of IdPs still retain their InCommon-only status.
...