Junior High Students 'Short 100 Hours of Sleep Annually' Yet 70% of Parents Say They Get 'Enough' - Perception Gap Revealed [Survey]
A survey by DeltaX's 'Jukusen' reveals middle schoolers average 7.56 hours of sleep, falling short of recommendations. However, 70% of parents believe it's sufficient, exposing a perception gap.
📋 Article Processing Timeline
- 📰 Published: April 9, 2026 at 20:00
- 🔍 Collected: April 9, 2026 at 11:30
- 🤖 AI Analyzed: April 18, 2026 at 20:31 (225h 0m after Collected)
DeltaX Inc. (Headquarters: Chiyoda-ku, Tokyo; President: Tsuyoshi Kuroiwa), which operates the cram school selection service 'Jukusen', has announced the outline of a survey conducted on the 'sleep time of junior high school students'.
According to a survey by the Jukusen Journal, the average sleep time on weekdays was 7.56 hours. Compared to the 8 to 10 hours recommended by the Ministry of Health, Labour and Welfare, this calculates to a shortfall of at least about 26 minutes.
On the other hand, about 70% of parents perceive that 'their child is getting enough sleep', showing a gap between reality and perception.
In this article, we decipher the reality of junior high school students' sleep time, the characteristics of their daily rhythm behind it, and the countermeasures taken at home, based on survey data and parents' voices.
For details, please click here.
## Junior High Students' Sleep Time Averages 7.56 Hours - A Shortfall of 26 Minutes
### Over Half (55%) Get Less Than 8 Hours of Sleep on Average Weekdays
Looking at the distribution of sleep time, '8 hours (33%)' is the most common, followed by '7 hours (28%)'.
The overall average is 7.56 hours, with very short sleep times being rare; at first glance, it is a level where it's easy to feel 'they are sleeping to some extent'.
However, the recommended sleep time for junior high school students indicated by the Ministry of Health, Labour and Welfare's 'Sleep Guide for Health Promotion 2023' is 8 to 10 hours. The difference from this average value is 0.44 hours = about 26 minutes.
It is only 26 minutes, but...
According to a survey by the Jukusen Journal, the average sleep time on weekdays was 7.56 hours. Compared to the 8 to 10 hours recommended by the Ministry of Health, Labour and Welfare, this calculates to a shortfall of at least about 26 minutes.
On the other hand, about 70% of parents perceive that 'their child is getting enough sleep', showing a gap between reality and perception.
In this article, we decipher the reality of junior high school students' sleep time, the characteristics of their daily rhythm behind it, and the countermeasures taken at home, based on survey data and parents' voices.
For details, please click here.
## Junior High Students' Sleep Time Averages 7.56 Hours - A Shortfall of 26 Minutes
### Over Half (55%) Get Less Than 8 Hours of Sleep on Average Weekdays
Looking at the distribution of sleep time, '8 hours (33%)' is the most common, followed by '7 hours (28%)'.
The overall average is 7.56 hours, with very short sleep times being rare; at first glance, it is a level where it's easy to feel 'they are sleeping to some extent'.
However, the recommended sleep time for junior high school students indicated by the Ministry of Health, Labour and Welfare's 'Sleep Guide for Health Promotion 2023' is 8 to 10 hours. The difference from this average value is 0.44 hours = about 26 minutes.
It is only 26 minutes, but...