The word "summative" means something that is done or given at the end of a period of time, usually to evaluate or represent the overall performance or achievement. Full definition
«In a class where everything students produce... results in a score that contributes to the final grade, all assessments become summative assessments of learning, with associated motivational effects» (Chappuis et al., 2012, 297). (assessmenteducation.org)
They often happen late in the instructional process to validate (or certify) learning so the use of summative assessment data in the classroom is more for guidance — assigning grades, promotion or graduation to the next level, credit for courses, etc.. (assessmenteducation.org)
Perhaps some brave administrators have even ventured out and adopted a software program that enables them to collect data on their teachers for summative evaluation purposes. (idra.org)