Math domains and item analysis
easyCBM does not do a breakdown of math domains because the results of numerous empirical studies suggest that these sub-scores are not sufficiently reliable to be used to guide decision making.
In our Basic Math progress monitoring measures you can select a specific math domain test (such as geometry, measurement, etc.). For the Proficient Math measures, all of the different test forms have math items from across the domains.
The issue is that there are not enough math items in each of the domains to enable reliable sub-scores to be reported (we would need to increase the length of the tests considerably to be able to provide sub-test reports with integrity). We do, however, provide a way for teachers to review the domains with which their students are struggling in our Reports --> Groups --> Item analysis table.
To get to the reports, click on the name of a test that your students have taken and then scroll down the page to the CBMs section and click on the name of the test to view the reports.
Group Report
The bar graph displayed in the Group Report (by measure type under the CBMs section) provides information regarding the heterogeneity of student performance on a specific assessment. If the students’ scores cluster together in a single similar skill grouping, it is likely that teachers can effectively meet students’ instructional needs with whole-class instruction.
When you have one or a few students who score significantly lower (or higher) than their peers, they may need to investigate opportunities to differentiate instruction to better meet their specific skill-based needs. These reports are intended to assist with grouping for instructional interventions.
Group Summary Report
Below the Group Summary Report is the list of students in the group. Here you can click on the View Test link in the column to the right of the student’s name. Clicking on this link will take you to the student’s actual grade test. Here you will be able to see what items a particular student missed and correlate this to what concept a test item is targeting.
