Priscilla Cruz, a campaigner for education reform from Todos Pela Educacao, sums up the challenge like this: "The political issue is that teachers are voters, and in Brazil there are two million of them that can decide elections, so it is very hard to make changes".

BBC: Booming Brazil held back by education gap

That's up to other people to decide but I think we should be very hard on these people.

BBC: CHOOSE A SPORT