Enough already about feet. More interesting is an article in the NYT Magazine about single sex education in grade school. Here's a quote:
The boys like being on their own, they say, because girls don’t appreciate their jokes and think boys are too messy, and are also scared of snakes. The walls of the boys’ classroom are painted blue, the light bulbs emit a cool white light and the thermostat is set to 69 degrees. In the girls’ room, by contrast, the walls are yellow, the light bulbs emit a warm yellow light and the temperature is kept six degrees warmer, as per the instructions of Leonard Sax, a family physician turned author and advocate who this May will quit his medical practice to devote himself full time to promoting single-sex public education.