2025 Volume 92 Issue 4 Pages 663-673
This study quantitatively examines the transformation of high school enrollment structures across Japan's 47 prefectures over a 35-year period (1990-2024), focusing on the effects of declining birthrates and tuition-free high school policies. Utilizing panel data derived from the Ministry of Education's School Basic Survey, the research analyzes five key indicators―public school enrollment rate, average enrollment per public school, public school capacity dependency, private school application rate, and average enrollment per private school―through hierarchical linear modeling (random-intercept models).
The analysis reveals that while nationwide trends such as the declining youth population and the implementation of tuition-free policies have influenced school size and enrollment patterns, significant structural disparities persist at the prefectural level. Specifically, the tuition-free policy introduced in 2010 has had a statistically significant impact on stabilizing or slightly increasing average school size in both public and private sectors, particularly in the context of declining youth populations. However, indicators such as public school enrollment rate and private school application rate show minimal responsiveness to national trends, suggesting that regional enrollment structures remain deeply embedded and resistant to change.
Scatterplots of random effects illustrate distinct typologies among prefectures. For example, Okinawa exhibits high public school enrollment and large school sizes, while Tokyo demonstrates low public school enrollment but largescale institutions. These visualizations highlight how urban and rural areas differ not only in school size but also in the balance between public and private school roles. Furthermore, the analysis confirms that prefectures with limited private school options experience reduced policy impact, aligning with previous findings by Mariel et al. (2021).
The study provides empirical findings that can inform evidence-informed policy making (EIPM), particularly by offering statistical insights into structural regional disparities. It underscores the necessity of region-specific policy design, especially in the context of demographic decline and educational equity. The findings suggest that uniform national policies may yield uneven outcomes due to entrenched local structures, and that future reforms should consider these regional nuances.
In conclusion, this research provides a comprehensive macro-level evaluation of Japan's high school enrollment system, revealing both converging national trends and persistent regional disparities. These findings highlight the importance of considering local contexts when interpreting statistical trends, and suggest that more nuanced, regionally sensitive policy approaches may enhance effectiveness.
