potty training 101

Twice we have tried to get Levi to graduate from diapers to toilets. Twice we have failed. So, this time around we have decided to put Levi in a very advanced potty training school. Tuition is close to $2000, but we figure it will be worth it in the end to have a son potty trained by the time he goes to sunbeams. Strangely enough, this educational institution is located at our local Home Depot. Somewhere along the way, our bathroom reno has changed from fixing the mold to building a new bathroom for Levi to poop in. He loves the whole idea of this and talks about it frequently. He even got to look at the toilets and pick one out.
I really hope this works, cause if it does, we just might become Guiness record holders for most expensive potty training technique. If it doesn't work, then we have seriously tried all avenues that we can think of, and will be in desperate need of help.