Minnesota adopted the WIDA standards and assessments for English Language Learners (ELLs) in 2013. The Owatonna school district uses the ACCESS test to determine academic language proficiencies and proficiency levels for English language learners.  

Here are some links for more information about WIDA (World-class Instructional Design and Assessment).

WIDA site
Can-Do Descriptors
ELD standards
Webinars for parents (English and Spanish)