Everyone talks about when their children are potty trained...meaning when they pee or poop in the toilet. (Being surrounded by dozens of potty training children daily...'my child is potty trained' has various (and often incorrect) meanings).
But what about these points:
When can your child use a public bathroom stall alone? And lock the door?
When can you child go to a public restroom without you (e.g. you are at dinner and your child needs to go...when do you send them in alone)?
When can your son use the urinal?
When should boys stop going in the Women's Room with Mom or girls to the Men's Room with Dad?
These are the benchmarks that signify you are winning the war on the washroom.