Imagine an elementary school teacher told you that many of her students had failing grades, so she had implemented a new reading curriculum. If she told you th

Imagine an elementary school teacher told you that many of her students had failing grades, so she had implemented a new reading curriculum. If she told you that afterwards the failing grades had "soared", it could easily be read either way: - The (previously failing) grades had increased, so the program must be working very well. - The percent of grades that count as failing had increased, so the program must actually be terrible.