Originally designating a class or division in Roman society according to property and taxation, among North American churches with Reformed in their title (e.g., Reformed Church of America and Christian Reformed Church), classis refers to an organizational unit within the church’s governmental structure. A number of churches in a limited geographical area are grouped into a classis. The classis functions in a supervisory capacity over the churches and ministry in its area. The classes are in turn responsible to the synod. All of the ministers of the area and one elder from each consistory (the ruling board in each particular church) form the membership of the classis. The classes usually meet individually two or three times per year. The classis and the presbytery of Presbyterian bodies are similar structures.

M. D. Floding

Fuente: Dictionary of Christianity in America