Just copy and paste into PowerShell (Active Directory Module for Windows PowerShell) to get the version of AD schema on all domain controllers in current domain:

[code]
$schemaContext = Get-ADRootDSE | %{$_.schemaNamingContext}

Foreach ($dc in ([System.DirectoryServices.ActiveDirectory.DomainController]::findall(
(new-object System.DirectoryServices.ActiveDirectory.DirectoryContext("Domain",$env:USERDNSDOMAIN)))) |
%{$_.name})
{
$path = ‘LDAP://’ + $dc + ‘/’ + $schemaContext
$Object = [adsi]$path
$dc + ‘ ‘ + $Object.objectversion
}
[/code]

AD Schema objectVersion on all Domain Controllers