ACEN and CCNE-Between the (ACEN) Accreditation Commission for Education in Nursing and (CCNE) Commission of Collegiate Nursing Education. Who was established first and why?

ACEN and CCNE.

Between the (ACEN) Accreditation Commission for Education in Nursing and (CCNE) Commission of Collegiate Nursing Education. Who was established first and why?

Does a school have to be accredited by both the ACEN and CCNE to function?

Do these groups provide definitions for what they are looking for? “Excellence” can have different meanings as well as some other terms?