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.
Most education programs in Canada begin in kindergarten (age five) or grade one (age six) and go to grade twelve (age 17 or 18), except in Quebec, where students finish a year earlier. After completion of a secondary school diploma, students may go on to post-secondary studies.