
Pädagogische Maturitätsschule Kreuzlingen
Classroom communication in group chats
The GDPR-compliant messenger for schools. For protected communication between teachers, parents, and students.
Communication in schools is demanding: teachers, parents, and students need reliable information, clear agreements, and fast, uncomplicated exchanges. Conventional tools quickly reach their limits due to data protection issues, disorganized group chats, or a lack of permission controls.
Threema Education is a privacy-compliant, structured, and easy-to-use solution designed for schools. No phone numbers are required, no data is shared with third parties, and the school has full control. This ensures that communication remains secure, targeted, and efficient.
From parent-teacher meetings and absence notifications to canceled classes and group projects, schools face countless situations every day that require reliable communication. Yet teachers often resort to private messengers, which can leave them in a legal gray area. Students may disclose personal data without adequate protection, parents struggle to keep track of everything, and the school has no control over the exchange of information.
To be legally sound and compliant with privacy regulations, school communication requires clear structures, secure channels, and full control by the school.
Confidential information is shared daily in schools. It’s not enough for messages to arrive quickly – they must also be transmitted securely and with minimal data collection. Who has access? What information is being recorded in the background? Many messaging apps collect more information than is apparent at first glance.
Threema Education focuses on robust data security: no phone numbers, no centrally stored metadata, no user profiles. Instead, it offers true end-to-end encryption and gives the school full control, ensuring that sensitive content remains confidential.
Confidential communication, controlled groups, and no data risk: this is what reliable digital school communication consists of.
Teachers, parents, and students can communicate securely without sharing private mobile phone numbers.
Send messages to entire classes, parents’ associations, or departments with just a few clicks – ideal for schedule changes, sick notes, or organizational information.
Easily create groups for classes, projects, or clubs, while teachers keep the overview.
The school determines who can create groups, send messages, and share files.
No phone numbers are required, no personal metadata is stored, and no data is shared with third parties.
Polls for scheduling appointments, secure sharing of photos, documents, and forms, plus clear guidelines for availability outside of class hours
From real-world experience: How Threema makes school life safer, more efficient, and fully privacy-compliant.
Children and adolescents are particularly vulnerable online. That’s why communication at schools requires not only efficiency, but also security. Threema Education protects young people’s communication with end-to-end encryption, minimal data collection, and full GDPR compliance – without ads or data sharing.
No data sharing
No advertising
No hidden profiling
No uncontrolled external contact
Clear, secure communication structures
Fewer calls to the school office thanks to targeted broadcast communication
Greater satisfaction among parents through transparent communication
Better involvement of students in group work
„Threema is easy to set up. It only took a few days until the app was rolled out across the school.“
per year, per teacher
GDPR-compliant and data-efficient
No phone numbers required
End-to-end encrypted chats
No ads, no data sharing
Clear roles and communication channels
Learn more – simple, privacy-first, and designed for everyday school life.