Abstract. The area of educational software evaluation has been increasingly muddled because of the lack of consensus among software evaluators. This talk presents the classification and evaluation granularity of educational software, proposes an educational software quality hierarchy triangle model (ESHTri model) based on some major software quality models, analyzes the signification and relativity of the factors, and indicates the primary analysis for the model formalization. At last, based on the ESHTri model, it provides an Educational Software Value Unique Model (ESVUM) and a framework of testing and evaluation to educational software.