Step 1. Get -30 seconds of zombie dog cd reduction (fairly cheap to do, costs maybe 5 mil. Make sure it's -31 at the MOST. Any more of any less means less exp)
Step 2. Spec tribal rites, zombie handler, and zombie dogs (other skills don't matter). Also make sure the WD takes off all non-essential gear so that their zombie dogs are super weak and die in 1 hit.
Step 3. Enter the scorched chapel
Step 4. Put a weight on your summon zombie dog key (i.e a water bottle of a piece of tape). It should summon 4 dogs every 4 seconds
Step 5. Have another player in the game with a weight on their keyboard spamming an aoe ability on top of themselves (i.e rain of toads, blizzard, etc)
Step 6. Get close enough so that the dogs enter the aoe and die
Step 7. Profit
Zombie dogs give an insane amount of exp when they die, to EVERYBODY in the group (both the WD and the non WD's). The more WD's you have, the more zombie dogs you have and the more exp you get. Do this while you sleep and you paragon level like crazy (you can go from 1-50 in about 24 hours). Make sure you equip cain's set too.
Diablo 3 - how to make exp on pvp - YouTube
Video that show's how.