When I visit and observe class- rooms, which I do a lot these days, I am impressed both with how hard teachers are working on important issues of instructional practice and how large the gap is between where teaching practice currently is and where it needs to be to successfully provide access to high-level learning for all students. At the classroom level, it is now much easier to find teachers who not only are exemplars of high-level instructional practice, but also powerful peer coaches for other teachers in their own schools. At the school level, finding schools that are exemplars in supporting teachers’ instructional improvement through the use of resources is also much easier. Likewise, many school systems have in place broad-gauge strategies of instructional improvement and