Development of the Arithmetic Subtest of the School Achievement Test-Second Edition

Abstract The School Achievement Test (Teste de Desempenho Escolar, TDE) has been widely used in clinical and educational contexts for the past 22 years. Arithmetic disorders are frequent among children and teenagers, requiring new and updated tasks to assess as accurately as possible school achievement. The last decade has witnessed a growing recognition of the need for significant changes in educational assessment practices. Evidence provided by item response theory (IRT) enabled the link of more detailed information improving assessment quality. The aim of this study was to develop a revised...