Statistical Methods for Protecting Personally Identifiable Information in Aggregate Reporting
"This Statewide Longitudinal Data Systems (SLDS) Technical Brief examines what protecting student privacy means in a reporting context. To protect a student’s privacy, the student’s personally identifiable information must be protected from public release. When schools, districts, or states publish reports on students’ educational progress, they typically release aggregated data—data for groups of students—to prevent disclosure of information about an individual. However, even with aggregation, unintended disclosures of personally identifiable information may occur. Current reporting practices are described and each is accompanied by an example table that is used to consider whether the intended protections are successful..."