What counts as intelligence? Educator Welby Ings, labelled a "naughty" student all his life, could barely read and write until he was 15 years old. He went on to become a renowned speaker, filmmaker, teacher, and author.

His new book Invisible Intelligence argues New Zealand's education system fails to recognise intelligence and ability beyond a narrow definition. Ings argues for a more "sophisticated" assessment system in an increasingly complex world.