english: Turns out that grittier kids were significantly more likely to graduate, even when I matched them on every characteristic I could measure, things like family income, standardized achievement test scores, even how safe kids felt when they were at school.
non_english: Wat bleek? De vastberaden jongeren hadden significant meer kans om te slagen, zelfs als ik ze afzette tegen  elke eigenschap die ik kon meten. Zaken zoals inkomen van de familie, uitslagen van standaardtesten, en zelfs hoe veilig jongeren zich voelden op school.