
TIMSS Geometry Score vs. Percent of Teachers Who Are Males Between the US, France, Germany, Sweden, Canada, and Switzerland, the difference between TIMSS General Math scores of 8th graders and TIMSS Geometry Scores of 12 graders increases 1 point for each 2% increase in the percent of teachers who are men. Switzerland has the highest TIMSS geometry scores of these countries (123 points higher than the US), and the highest percentage of male teachers. Germany, Canada, and Sweden have similar scores to each other (63 points higher than the US), and have almost twice the percentage of male teachers as the US. France scores 102 points higher than the US and 22% more of its teachers are men.The 123 point difference between US and Swiss 12th graders cannot be explained by any other factor. Per dtab404.htm the US spends more for education of primary students ($5,600 vs. 3,560) and about the same for secondary students ($6,667 vs.$6,761) than Switzerland, and considerably more than Germany (primary $2,900 and secondary $4,260), France ($2,900 and $5,430), or Sweden ($4,840 and $6,050). The number of students per classroom in Switzerland is smaller (18, compared to 23 in the US), but the number of students per classroom in France and Canada is larger at 25 students per classroom. Switzerland has one of the highest savings rates (6% higher than Canada and France, 4% higher than Germany, and 12% higher than the US). It is more probable that their higher math scores encourage greater savings, rather than that their higher savings rate enables them to provide quality educations to their studentsparticularly since they spend so much less for education than the US. If there are no other factors, and if this correlation is correct, even increasing the percent of teachers in the US who are males from 35% to 50% might increase TIMSS geometry scores by only 30 points, from 424 to 454still leaving the US in last place. Increasing it to the same level as Switzerland, without doing anything else, might increase TIMSS scores by 104 points to 528putting us in the range of the European nations.
This figure shows that even a small increase in the percent of teachers who are males (from 35% to 50%) has the potential to increase savings rates in the US from 15% of GDP to 19%which would put $280 billion more per year in American banks. Considering that we now have a negative savings rate, this would be a worthwhile goal. 

