Accreditation???

Hey guys, I recently visited a nursing school that I fell in love with. However, when I asked them about their accreditation for their nursing program they told me they were only accredited by Middle States (MSCHE). They told me that I would still be able to pursue a masters in nursing at other nursing schools in the US if I so desired. However, upon looking on the internet I realized that Middle States might only be regional accreditation and not national.