[JohnPiperFan]

Some smaller presbyterian denominations have reformed, calvinistic doctrine. The PCUSA (Presbyterian church of the USA) is more liberal, and is probably the largest presbyterian denomination but should be avoided if you are looking for reformed calvinist doctrine. However, the Orthodox Presbyterian Church (OPC), Presbyterian Church in America (PCA), and the Reformed Presbyterian Church of North America (RPCNA) are all conservative, Bible believing, reformed, calvinist leading denominations. I am a member of the OPC and am quite familiar with some of the different presbyterian denominations.