ETCH: A Database of Districts’ Math Curriculum Choices
K12 Database of math curriculum materials used by 934 US school districts (representing 52% of the US K12 student populations). Data like this is incredibly hard to come by and will be fought over viciously by the publishers. Its proliferation across other subjects (which the database’s author, the Center for Education Market Dynamics, would like to do) could produce some wild and rapid swings in how course materials get adopted. / via Education Week