If any of the DC public school people want help protecting their student records, I will donate pro-bono hours.<p>There&#x27;s one technique that is powerful and rare, which is translucent data access. It&#x27;s ideal for identifying memberships and trends, such as &quot;how many students are in a class each year&quot; while protecting personally identifying information. A simple common example is a one-way hash function that lets an app confirm a password without needing to store the password in plain text.