These videos are excerpts from a FairTest presentation by Dr. Carla Evans of the Center for Assessment on the instructional usefulness of these interim assessments and evidence from Oregon where a state mandated audit was undertaken of the prevalence and uses of these commercial assessments. Districts in Oregon spend millions of dollars on these assessments which, just at the district level take around 15 hours for elementary, 17 hours for middle, and 18 hours for high school annually.
Oregon HB 4124 Summary Report of interim assessment costs
Definition of Interim Assessment
Informed Interim Assessments