Formative and summative evaluation
From EvaluationWiki
Two Basic Distinctions in Evaluation
Educators typically talk about two kinds or stages of evaluation— formative evaluation and summative evaluation. The purpose of a formative evaluation is to assess initial and ongoing project activities. The purpose of a summative evaluation is to assess the quality and impact of a fully implemented project.
(from the 2002 User-Friendly Handbook for Project Evaluation, National Science Foundation)
