Minority language revitalization and educational assessment: Do language‐related factors impact performance?

In contexts of minority language revitalization, educational assessment should consider the effect of language‐related factors on performance. Student score comparisons might be unfair if assessment does not take into account the student's language background, language of instruction or the level of minority language standardization. Including language‐related variables in assessment may improve validity, reduce sociolinguistic bias, and make it possible to monitor the progress of the revitalization plans. In this study, we present research conducted in the Basque Autonomous Community, where Spanish and Basque co‐exist. Based on population data (N = 16,270) from a study of fourth‐grade students, results show a positive relationship between the percentage of minority language speakers in the school catchment area and mathematical competence. Results also highlight differences in performance as a function of sociolinguistic groups based on the combination of family language and instruction language, showing better average performance for the Basque‐Basque group.