The recent high-profile data-confidentiality fights in Arizona and Los Angeles have researchers worried that access to educators may become a difficult path. In the course of a decadelong federal lawsuit over English-language-learner programs in Arizona, lawyers for state schools chief Tom Horne subpoenaed the raw data from three studies…

The author reports on a review of state policies by researchers from the University of California, Los Angeles, which raises questions about the validity of the use of home-language surveys as a step to identify students eligible for special help in learning English. While it's ubiquitous in schools across the country, the practice of educators'…