Sleep paralysis occurs as a person is moving into or out of REM (rapid eye movement) sleep, the deepest part of sleep. During REM sleep, the body is largely disconnected from the brain, effectively leaving the body paralyzed.
England and a few other countries start formal education at age 4 or 5. That's harmful and misguided.
Full-time education is compulsory from the age of 6 to 15. From the person's 16th to their 18th birthday, they are obliged to pursue at least part-time education so they have a choice between full-time or part-time education.