With the development of higher education, the number and scale of college students are expanding, and the new situation poses challenges to the management of college students. This paper proposes a comprehensive development evaluation model for college students based on combination assignments and conducts a consistency test for expert ranking using Spearman’s rank correlation coefficient. The indicators are scored using the fuzzy affiliation degree method to eliminate the influence of dimensionlessness and the positive and negative differences between indicators. The correlation coefficient of G1 is corrected by standard deviation to determine the optimal combination of weights for the objective function, and it is dynamically adjusted according to the changes of the data in practice to reflect the degree of deviation and the comparative difference of each single weight. Finally, School C was chosen as the research object to study the timeliness of the comprehensive development teaching model in student management. The results show that among the 650 students in School C, the highest score of student comprehensive development evaluation is 4.083±0.65, which indicates that the comprehensive development evaluation in School C possesses goals and needs with high recognition as the premise of implementation and has strong theoretical and practical significance for the comprehensive development of college students.