How is CBM different from running records? Or informal reading inventories?

Running records and informal reading inventories (IRIs) focus on specific skills whereas curriculum based measures are indicators of overall reading proficiency. In addition, a large body of research has shown that one-minute samples of the number of words read correctly from reading passages are sensitive, reliable, and valid of measures of reading proficiency – there is little research to support the use of running records and IRIs. If teachers find them useful, running records and IRI’s may be used in conjunction with weekly progress monitoring to help inform changes to students’ instructional programs.  more