Using QR codes for learning has been an adjustment for teachers and students, but there's plenty of evidence that its use is growing. Although most schools still ban the use of smartphones in the classroom, some are beginning to incorporate their use as part of the learning process. Teachers and administrators that develop web sites related to specific courses of topics can use QR codes to make it easy for students to learn more. Simply putting QR code labels on any handouts will allow students or parents to bring the classroom home.
Libraries, both at school and public, along with museums and zoos, are adding QR codes to their information tags next to exhibits. This allows visitors and students to access and save links for later use.
If anyone knows of actual cases of schools using QR codes, it would be interesting to read about.