A principal boasts that he spends two hours a day in classrooms. And it is true--he really does visit his school's 17 teachers daily, chatting with students and occasionally chiming in on a lesson. But when teachers are asked what kind of feedback they get, they say the principal rarely talks to them about what he sees when he strolls through…

Interim assessments are hot in American schools. Also called benchmark or periodic tests, these assessments are given every four to nine weeks to check on students' progress. Although interim assessments are an important tool for school improvement, they are easy to misuse. In the author's work coaching principals in a number of districts, he has…