In this post, I am sharing with you some of the best free QR Code generators for teachers and students. QR Codes are readable barcodes that store various types of data (e.g., the URL of a website, a YouTube video, address, contact information, business card, email, plain text, among others). Since its introduction, QR Code technology has gained a strong foothold in the field of education as more and more teachers and students are using it to revamp old ways of learning and teaching and to explore new learning opportunities that were not available before.