New submitter josedu writes:"Sleep deprivation is a great, hidden problem that afflicts a great percentage of children in affluent countries. About 73% of 9- and 10-year-old children in the U.S. are sleep deprived, as are 80% of 13- and 14-year-olds. The new study thinks this is linked to the increased access to devices such as mobile phones and laptops late at night. One of the researchers put it very simply: 'Our data show that across countries internationally, on average, children who have more sleep achieve higher in maths, science and reading.' This disruption is also causing schools to dumb-down their instruction to accomodate the reduced capacity of these kids. Thus, even the kids who are getting enough sleep will suffer. The long-term impact of sleep deprivation on nationwide education levels is enormous."