Are all step stools a standard height? I bought a baby Bjorn safe step one and it helps my toddler reach the sink although another inch or two would of been perfect. I am guessing they probably make them all the same height but wasnt sure if that was the standard.
You can get stools in a wide variety of heights. We have a little one from Ikea that's made for kids (7"?), we have a slightly taller one from the hardware store (10"?) and a taller one yet from Ikea for adults (13"?). Just keep looking around in different places and don't limit yourself to the ones marketed to kids.
Re: stool height