What is the optimum desk height for a kids desk?
If you’re serious about the height thing, take a desk you are comfortable with and set a proportionate height for the child. If you park yourself in a “regular” chair and sit up straight at your desk, where does the top of the desk hit you? Just at the bottom of your sternum? Where ever it hits you, aim for that point on the child and measure it. The ergonomics will be similar. Good luck.