Summative assessments help you evaluate student understanding at the end of a unit. Have your students learned what you set out to teach them during an instructional unit? If properly done, summative assessments provide teachers, grade levels and schools with an overview of the academic achievement. How do you do that in an accurate, thoughtful and constructive way? How can these results too help you revise future instruction? Or revise future assessments? You must always keep a critical eye on whether they indeed are measuring what you want…and whether they are accurate measures.