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.
Education is compulsory for all children in Ireland from the ages of six to 16 or until students have completed three years of second level education and including one sitting of the Junior Certificate examination. Primary education commonly starts at four to five years old.