MetaMetrics®, located in Durham, NC, is an educational measurement and research organization that develops scientific measure ... s of student achievement that link assessment with targeted instruction to improve learning. The organization's renowned psychometric team created The Lexile® Framework for Reading, El Sistema Lexile® para Leer (the Spanish-language version of The Lexile Framework for Reading), The Lexile® Framework for Writing and The Quantile® Framework for Mathematics. read more