Four wrong if you accept the proper Queen's English spellings.

But then I had the strictest teacher in the world from ages 8 - 11 years old. It was like being in the 19th century, but he was the best teacher I ever had. Made us learn 20 new words every day, and then test us on them at the end of every week. Did a lot of shouting, but was very encouraging when you did well.
Not like these wishy-washy liberal types who brush poor numeracy and literacy under the carpet.