In a word, 'no'. Anything that you send through email, a chat or even instant message can be read by others without your knowledge. 

At TSBVI, your privacy is respected and your messages are not read by your administrators unless they are required to do so by law. As a state agency, TSBVI is subject to the Texas Public Information (Open Records) Act

As your IR Manager says during NEO (New Employee Orientation) each year, "never send anything in a message that you wouldn't want your grandmother to read".

This is especially important to remember when communicating with parents, educators and others outside of the TSBVI domain. Never include personally identifiable information for a student, medical details, student identification numbers or login credentials in an email or publicly shared document. If you need to transfer sensitive information, contact your IR Manager for secure options.