Open curriculum development

The world could use a good open curriculum, from basic color and shape identification through literacy and numeracy to geography, math and science, world literature, world culture, art and music. Even controversial topics such as politics and history. Each country could use a good variation on this theme suited to their own cultures and tastes.

First of all, the world needs a good basic literacy and numeracy curriculum for young students in each language that passes national curriculum standards in as many countries as possible. Please list relevant efforts here, and try to coordinate them to avoid the development of too many such efforts in a given language.