The research objective was to develop and evaluate systematic learning resources management process in inputs, process, outputs, outcome, and feedback of Nong Kung Wittayakarn School in Thailand. Research participants and key informants were 5 Grade 7-9 teachers, 34 Grade 7-9 students, 34 student parents, and 9 school board members totaling 82 people. Research tools were survey form, semi-structured interview form, learning resources evaluation form, sufficiency-oriented life satisfaction evaluation form, and meeting record form. The data analysis employed frequency, percentage, mean, standard deviation statistics and content analysis. Research findings reveal that systematic learning resources management process to strengthen sufficiency attributes of secondary school students comprises (1) Inputs--internal staff, external people, and supporting budget; (2) Process--Define, Create, Capture, Share, and Use; (3) Outputs--overall learning resources evaluation had 3.33 average from the 4-point scale with people at highest level followed in descending order by economic, societal, environmental and cultural domains; (4) Outcome--overall and detailed sufficiency-oriented life satisfaction evaluation are at high level with psychological dimension at the highest score followed in descending order by well-being sustainability--self-reliance, immunity, and resilience; and (5) Feedback with reflection cycle--before action review (BAR), during action review (DAR), and after action review (AAR). The evaluation of the process reveals that the participants' acceptance is at highest level.