There are numerous and reliable ways by which one can measure the ____1____ of employment on ___________2________. We compared the grades of students working a lot with those working much less or not at all. We also ____3_______ workers with non-workers ____4______ commitment to education. Additionally, we followed students over time as they increased or decreased their work hours, and we – _____5_______ the efects of different employment patterns on school _________6_________. We uncovered numerous explanations for these negative effects: Working students have less time to _____7_____school assignments, get too tired from work to study, view school less rewarding, and increase alcohol and drug use because they have more spare money. To summarize, working 20 hours or more weekly can ______8________ decreased school performance and increased drug and alcohol use. If students want to be successful in school, they should ________9_______ that early employment builds character and _______10_____ work no more than 10 hours per week.