Setting aside the fact that kids come in different sizes, the desks that the schools get that they can adjust can be set for a to-top height of something over 20 inches to something under 30 inches.
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.
Also, See these charts:
http://books.Google.com/books?id=9BM8Su0Oi00C&pg=PA11&lpg=PA11&dq=children%27s+furniture+sizes+height&source=bl&ots=KW7Uc0a_jX&sig=MHA7Ddqsq9V7KCyvPHA67rNPy3M&hl=en&ei=7tFhS-y0O4TosQOElsnCCw&sa=X&oi=book_result&ct=result&resnum=6&ved=0CB4Q6AEwBQ#v=onepage&q=children%27s%20furniture%20sizes%20height&f=false
The height of a desk depends on the age and height of the person it is intended for. A child's desk may only be three feet in height for example.
You can adjust the height of your desk by using a desk with adjustable legs or a desk riser. This will allow you to raise or lower the desk to a comfortable height for your needs.
Height adjustable desk
To raise a desk to a more comfortable height, you can use desk risers, adjustable desk legs, or stack books or blocks under the desk legs. Make sure the desk is stable and secure after adjusting the height.
You can raise your desk to a more comfortable height by using desk risers, adjustable desk legs, or stacking books or blocks under the legs of the desk. Make sure the desk is stable and secure after adjusting the height.
id say about waist height =)
To make your desk taller, you can consider using desk risers, adjustable desk legs, or adding blocks under the desk legs to increase the height. These options can help you customize the height of your desk to better suit your needs.
Ergonomically, the optimum height for kitchen counters is 3 feet, or 36 inches. This can vary however, as people of different heights would require different height counters.
Launch height is term used in aviation as optimum height for a release of missiles or bombs.
The SI unit used to measure the height of a desk is meters (m).
A heightometer.
You can pick the right desk height by knowing how tall you are. The most important is how comfotable you are and how much room will you need to work with.