In this new era of data-driven instruction, assessments play an increasingly important role. What are the goals of a teacher-produced assessment? Does the assessment reflect these goals? What does the resulting score mean? This workshop trains teachers in the nitty-gritty process of designing a test that accurately measures and reports a student’s mastery of the material learned. Administrators will learn to process such scores into meaningful data which can be used to plan further instruction policies. By the end of the workshop, the teacher will be able to write accurate and reliable assessments and use data from assessments to plan instruction.