Assessment is today's means of modifying tomorrow's instruction.

We need to develop a robust set of tools - strategies and routines - that help us address student variance. It's easy to come to rely on two or three "trusty" instructional strategies like worksheets and lectures. Those are of little help in planning for a variety of student needs. As we develop a better toolbox, we're empowered to meet students where they are.

Important element is deeply understanding our curriculum. Most teachers know what they're going to cover this week or this term. Few of us can specify precisely what students should know, understand, and be able to do as a result of any particular learning experience or set of learning experiences. Without that specificity, alignment between content, assessment, and instruction is weak.

Until a teacher learns to use elements like time, space, materials, groupings, and so forth flexibly, it's incredibly difficult to teach students as they need to be taught.

In differentiated classrooms, teachers begin where students are, not the front of a curriculum guide.

Plan to be better today, but don't ever plan to be finished

A teacher in a differentiated classroom does not classify herself as someone who ‘already differentiates instruction.’ Rather that teacher is fully aware that every hour of teaching, every day in the classroom can reveal one more way to make the classroom a better match for its learners.