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The-present study investigates the"phenomenology of-evaluating learning outcomes".In-terms of-purpose, application and-method of-conducting qualitative research is of-phenomenological type.The-research population includes all the-professors in the field of-education from the-universities in-Tehran.Using snowball sampling and-continuous comparison of-data until theoretical saturation,10of them were interviewed with-semi-structured interview.Its subject area was in-the-field of-educational sciences.The-method of-data gathering includes field studies,library studies,and-semi-structured interviews.In-order to-ensure the-reliability of-the-research data,the-methods of-triangulation of-data sources,repeated studies,continuous adaptation of-data,summarization,classification of-information and-review of-the interviews by-the-interviewee professors and-also by-the-main supervisors and-advisors were used.In-order to-evaluate the-validity of-the-data obtained by-purposive sampling method from the-opinions of-36-professors of-other universities in-Tehran who have expertise in-this subject were used to-achieve theoretical saturation.The-data of-this study were analyzed using the-seven-step model of-Wan Manen and- Finally,5-structures(nature of-evaluation,evaluator(teacher),nature of-learning outcomes,evaluated(student)and-nature of-curriculum),17-dimensions,87-categories and-320-indicators of-phenomenology of-evaluating learning outcomes in-the-format of-a model were identified.The-Findings show that the-evaluation of-learning outcomes is surrounded by-5-mentioned structures;and-the-obtained structures,dimensions and-indicators are related to-each other and-all of-them contribute to-the-measurement of-learning outcomes and-have the-same value.