Research on the Correlativity of Daily Schedule Sequences and Academic Achievement among Senior High School Students Based on Dimensional Statistical Analysis

Abstract

Based on the survey data of 54,102 eighth-grade students in Shanghai, this study adopts statistical methods such as multiple regression analysis, threshold model and Shapley value decomposition to explore the correlation between senior high school students’ daily schedule sequences (including sleep duration, study time, homework burden, electronic device use and extracurricular activities) and academic achievement. The study finds that both sleep duration and study time have a significant inverted U-shaped relationship with academic achievement, with the optimal interval of sleep duration being 7-9 hours and that of study time being 2-4 hours. Homework burden is negatively correlated with academic achievement, especially for rural students, excessive homework burden will significantly inhibit their academic performance. There is an obvious “substitution effect” in the use of electronic devices: excessive recreational use crowds out study time, while moderate educational use has a positive impact on academic achievement. The results of Shapley value decomposition show that sleep duration contributes the most to the explanation of academic achievement, followed by study time, and homework burden has the most significant negative impact. The findings provide an empirical basis for optimizing senior high school students’ schedules and improving their academic achievement.