According to its website:

The National Council of Teachers of Mathematics is the public voice of mathematics education, supporting teachers to ensure equitable mathematics learning of the highest quality for all students through vision, leadership, professional development, and research.

There are six principles that guide their work.

The first is the Equity Principle.  It describes the need for equity in math education for all children.  It demands that all children have access to high-quality math education, with high expectations for all learners.  It also requires that accommodations are made for learning differences and that all classrooms and students are given the resources and supports they need to be successful.

I don’t know about you, but I think the Equity Principle should be the guiding principle for all education, not just math.  Imagine a world where the above ideals are played out in every classroom, in every town, in every age group, all over the world.

Yep- the Equity Principle is cool.