Erin L Faught, John P Ekwaru, Douglas Gleddie, Kate E Storey, Mark Asbridge, Paul J Veugelers
The combined impact of diet, physical activity, sleep and screen time on academic achievement: a prospective study of elementary school students in Nova Scotia, Canada
The international journal of behavioral nutrition and physical activity
empirically test 12thgrade students teachers probationary certification emergency certification private school certification certification subject area compare relative students teachers standard certification subject area also determine whether specific statebystate differences teacher licensure requirements systematically affect student achievement mathematics find teachers standard certification statistically significant positive impact student test scores relative teachers either hold private school certification certified subject area contrary conventional wisdom mathematics science students teachers emergency credentials worse students whose teachers standard teaching credentials