Classtime (www.classtime.com) is a web-based engagement and assessment platform for modern teaching. Classtime allows to intensify the interaction between teacher and learner, increases the transparency of learning progress and saves the teacher time (auto-correction of homework/assessments) – be it in face-to-face or online/distance learning. Further applications include pre-knowledge check, flipped classroom, gamification, etc. It can be assigned by a teacher and used independently by a student. Students can use single sign-on (such as OneRoster). Students must have internet access – low bandwidth (e.g. for email, web searching, word processing).