But sandgerdi might be the perfect place to raise girls who have mathematical talent. Government researchers two years ago tested almost every 15 year-old in iceland for it and found that boys trailed far behind girls. That fact was unique among the 41countries that participated in the standardized test for that age group designed by the organization of Economic Cooperation and Development. But while Iceland's girls were alone in the world in their significant Iead in math, their national advantage of 15 points was small compared with the one they had over boys in fishing villages like sandgerdi where it was closer to 30.