Children and young people are at the heart of society. A good education enables them, as global citizens, to respond to the challenges of a complex world, and contribute to building peaceful and sustainable communities. The teachers of today and tomorrow need the skills, knowledge and support that will enable them to meet the diverse learning needs of every girl and boy. We must remember that teachers are an investment for the future. The international community and governments must stand united to support teachers and quality education worldwide, and especially in those countries where the highest number of out-of-school children exists.