Here’s a PowerShell HashTable pre-built with the Active Directory and Exchange schema versions as of September 2014. Active Directory (Forest Prep) Schema Versions: 13 Windows 2000 Schema 30 Windows 2003 Schema 31 Windows 2003 R2 Schema 39 Windows 2008 BETA Schema 44 Windows 2008 Schema 47 Windows 2008 R2 Schema 51 Windows Server 8 Developer … Continue reading Schema Versions