The Work Sampling System®, Fifth Edition (WSS-5), is an authentic, observational assessment customized for each grade level. By collaborating on real-life inputs between professionals and parents, WSS consists of three complementary elements used in connection with the existing curriculum: Developmental Guidelines, Developmental Checklists, and Family or Summary Reports. WSS helps professionals monitor children's developmental progress across a full range of domains via its standard version or Head Start-aligned version.





