@inproceedings{HUB-CSES/ZSP16, author = "Z. Zheng and M. Stapel and N. Pinkwart", title = "Perfect Scores Indicate Good Students !? The Case of One Hundred Percenters in a Math Learning System", year = 2016, booktitle = "Proceedings of the 9th International Conference on Educational Data Mining (EDM 2016)", url = "http://www.educationaldatamining.org/EDM2016/proceedings.html" }