Senior Research Associate
Program/Areas of Interest
Mathematics and science assessment of linguistically diverse students; Mixed methods
Rachel Kachchaf completed her dissertation in the fall of 2011 from the University of Colorado where she focused her studies on language issues in the assessment of non-native English speaking students. Her dissertation used both qualitative and quantitative methods to compare how native Spanish speaking students and mainstream monolingual students solved multiple-choice science items. Her previous research experience includes examining the linguistic features of mathematics test items, examining the reliability of test scores given by raters of different linguistic backgrounds, and investigating illustrations as a form of testing accommodations for English language learners. Her current research interests centers on the use of cognitive interviews to conduct detailed analysis of how non native English speakers solve test items to inform the development of more accurate measures of what linguistically diverse students know.
- Rater Background as a Source of Measurement Error in the Testing of English Language Learners Rachel Kachchaf and Guillermo Solano-Flores (2012) Applied Measurement in Education
- Semiotic Structure and Meaning Making: The performance of English language Learners on Mathematics Tests. Gullermo Solano-Flores, Connie Barnett-Clark, and Rachel Kachchaf (2013) -- Educational Assessment.
AERA: American Educational Research Association, NCME: National Council of Measurement in Education, NABE: National Association for Bilingual Education