BBC Documentary series on the differences in how boys and girls learn

This was a fabulous documentary showing how boys and girls are wired differently. I'd like to find it so I'm going to give a short recap of it in case anyone has seen it and remembers what it was called or how I could find it. I've been googling for 10 minutes and can't find it anywhere.

They started off in kindergarten and followed this class through high school, so it took a number of years. They chose kids who hadn't been given gender toys in order to determine if our predelictions for dolls/guns is due to nurture or nature. In the first show, we watched them all run into a play room where plasticine had been put on tables. All the little boys wound up stabbing the plasticine, mushing it in each other's hair, throwing it across the room, making weapons of sorts, while the girls sat together in groups and made families, houses, etc, and got along very well.

The parents were all surprised because none of the girls had had dolls or prams or tea sets, and none of the boys had been given trucks or guns, etc to play with.

It ended up with the kids in high school, and narrated the difficulties some of the boys were having. Talked about how school was geared to teach to girls, not boys, and how the boys did better when partnered with a girl in science classes, etc.

Bad summary, but it's been a few years since I saw it and I would love to get a copy of the series.

Does anyone remember it or has anyone even seen it?