 Good teachers are hard to find even when I was in high school in the 1980s I had quite a range.<p>Compare three math teachers I had.<p>One teacher was so laid back he played music in class but it was 1960s music, nobody in the entire class got over 40%.<p>The second math teacher was also a university professor he was so strict many in his class failed too.<p>The third was a bit geeky in behaviour, a bit eccentric, he would &quot;pick volunteers&quot; three of them to solve problems on the blackboard at the front of the class. I can&#x27;t recall anyone in that class getting under 90%.