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.
In this way education is free between 6 and 16 years old. The state does not pay for International and private schools and so people will have to fork out some cash for this service. The price will depend entirely on the region but roughly speaking the price for private and international schools vary from 4,000 to 8,000 euros a year.