Ethical Considerations of AI in Education: A Case Study Based on Pythia Learning Enhancement System. - Simon Röhrl; Susanne Staufer; Flemming Bugert; Vamsi Krishna Nadimpalli; Florian Hauser; Lisa Grabinger; Dominik Bittner; Timur Ezer; Ricardo Altweck; Sabine Graf; Thomas Kriza; Jürgen Mottok (IEEE Access, 2025)