Thomas, Christopher and Shaw, Christopher (1992) Issues in the Development of Multigrade Schools. World Bank Technical Paper Number 172. Washington, D.C: The World Bank. http://www-wds.worldbank.org/servlet/WDSContentServer/WDSP/IB/1999/10/21/000178830_98101904141971/Rendered/PDF/multi_page.pdf
Fosco, Andrea M.; Schleser, Robert and Andal, Jolynne (2004) Multiage programming effects on cognitive developmental level and reading achievement in early elementary school children. Reading Psychology, 25: 1 - 17
Multi-grade teaching - A review of research and practice
Occasional Paper issued by the Education Division of the Overseas Development Administration.