The pupil-teacher ratio in Japan's lower secondary schools is projected to gradually decrease from 11.95 in 2024 to 11.74 by 2028. Year-on-year changes indicate a consistent but slight decline of approximately 0.4% annually between 2024 and 2028. As this forecast demonstrates a steady downward trend, the compound annual growth rate (CAGR) over the five-year period is anticipated to be roughly -0.44%.

Future trends to watch for include:

Potential policy shifts affecting teacher recruitment or class size requirements, which could further influence the pupil-teacher ratio.
Demographic changes such as declining birth rates in Japan might contribute to a sustained decrease in the pupil population.
Technological advancements and their impact on educational delivery may alter the dynamics of class sizes and teacher roles.