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Gersten, Russell; Jayanthi, Madhavi; Newman-Gonchar, Rebecca; Anderson, Daniel; Spallone, Samantha; Taylor, Mary Jo – Regional Educational Laboratory Southeast, 2020
Several school districts in Georgia use two teacher-administered diagnostic assessments of student knowledge of mathematics as part of their multi-tiered system of support in grades K-8: the Global Strategy Stage (GloSS; New Zealand Ministry of Education, 2012) and the Individual Knowledge Assessment of Number (IKAN; New Zealand Ministry of…
Descriptors: Mathematics Tests, Diagnostic Tests, Test Reliability, Test Validity