This system development enables ubiquitous peer review and reuse of reviewer comments to assess teaching/learning in higher education. The purpose of this project is two-fold: (1) to develop applications for recording and storing reviewer annotations on streaming class lectures as time sequence data of pen-tip coordinates, and (2) to identify key principles and criteria from annotated video data to assess and evaluate the quality of teaching and learning (e-teaching portfolio). The evaluation studies were conducted to gain a broad understanding of how reviewers identify and record educational events effectively and appropriately during “lesson study (Jyugyo kenkyu)” when using this system. The collection and analysis of reviewers' annotations indicated that this system is capable of reusing collected comments in order to suggest weak and strong points in class lectures from different reviewers' perspectives.