Teachers are fixers. In some sense we view our students as "as is" houses or fixer-uppers, waiting for us to determine what needs repair and updating so that we can flip them in market-ready condition to the next teacher. Assessments can help: DO analyze data both data deficits and mastery. DON'T assess what you haven't taught. DO use instructional resources with embedded assessments. DON'T use instructional resources which don't teach to data.