it's working for 18-year-old senior viviana hernandez. viviana spends half the day at a local college taking dual enrollment classes, getting both high school and college credit for the same class. >> there is a big difference between high school classes and college-level courses. first the instructors over there require a lot more for you. they expect you to be a college student, college ready. so you need to meet their standards. when i started taking college classes, my parents didn't understand my tight schedule, that i needed to study. they want med to help out around the house, to look after my sister, my little brother. >> reporter: 89% of the students live in low income households. viviana and her parents are migrant field workers. >> neither of them get a high school education so they really don't understand they don't know like, the stress of going through it or anything like that. all they know is that i get good grades and i'm going to graduate high school. >> and maybe college, too. >> i stress out a lot with my college work b