What is "zangle"

Zangle is a student information system for schools and school districts to allow teachers to record students' academic progress in classes and for parents and students to check their grades, find assignments that will be due in the future, and find past-due assignments.The system features many modules that record various student data such as attendance, academic history, behavior and so on. It is popular among schools across the United States, and perhaps in other locations. The system uses the Microsoft SQL database engine for data storage.