Skillful instruction drives student achievement. Simply stated, a teacher’s pedagogy (skill in the art and science of teaching) clearly and directly affects the rate and degree of student learning. Since pedagogy is a skill-set, not merely a knowledge base, it is best developed through practice with feedback. Like all skills…serving a tennis ball, riding a bike, painting a landscape…improvement is realized through repeated practice with skillful feedback. The act of providing this skill-developing feedback is what we call coaching.