The International Commission on Mathematical Instruction (ICMI) http://elib.zib.de/IMU/ICMI/
A commission of the International Mathematical Union (IMU), charged with the conduct of the activities of IMU bearing on mathematical or scientific education. ICMI takes the initiative in inaugurating appropriate programmes designed to further the sound development of mathematical education at all levels, and to secure public appreciation of its importance.
Scottish Mathematical Council (SMC) http://www-maths.mcs.st-and.ac.uk/~smc/
The main objectives of the Council are to foster and improve mathematical education at all levels, and to encourage the advancement and application of mathematics throughout Scotland. Among other activities, the SMC publishes an annual Journal and organises school-level comptetitions.