Star Curriculum-Based Measurement (CBM) allows you to accurately assess students’ reading and math development so that you can better target instruction and intervention to each learner’s specific needs. Teachers administer one-on-one assessments of one minute (or ninety seconds for Rapid Color Naming), then use the results to understand students' learning gaps, instructional needs, and patterns of errors so they can leverage students' strengths and identify opportunities for growth. As you give the assessments again over time, you can see how students are progressing.