Рет қаралды 109
This is a recording of a presentation to the Annual Director's Meeting for the Office of Migrant Education. Erin Pollard from the What Works Clearinghouse, Institute of Education Sciences, US Department of Education, gives an overview of the US Department of Education's evidence tiers and the types of research methods that can be used to meet the evidence tiers. A special emphasis is made on creating control groups and increasing rigor.