The aim of this work is to develop and investigate the model for assessing learning management on the enrichment science classrooms in the upper secondary education of the Development and Promotion of Science and Technology Talents Project in Thailand. Using the research methodologies with the four phases: to investigate the background of the theory and thinking on learning management for enrichment science classes was assessed; to invent and build the enrichment science classes learning management model for trying out this model at school class was developed; using the 5-ranking questionnaire scale of the quantitative data for responding students', teachers', and schooling administrator' perceptions were used; and using qualitative data; students' interviews were selected of 5% students were interviewed and the at Grade 10, 11, and 12 level at their learning environment classes were observed at Sarakham Pittayakom School, a enrichment science classes. Statistically significant with the frequency, percentage, mean, and standard deviation were analyzed. It was found 7- Factor assessments, namely; heading assessment, purposing assessment, assessing goal, typing assessment, assessor, criteria assessment, and user of information communication. Focused on the factors assessing goal and typing assessment were the most important assessment scale for suitability, truth, possibility, and using opportunity, indicated at highest level.