Scholarships are competitions, and most of them have many applicants who are very qualified. Your poor performance in your freshman and sophomore year puts you at a disadvantage when compared with other students who performed well for all 4 years. It's possible to overcome that disadvantage, but it's going to require hard work on your part, because now your performance will need to be stellar, not just average. Donors do appreciate situations in which a student proves that he can overcome an obstacle, so if your poor performance in the past was due to a legitimate cause (i.e. illness, family trauma, learning disability, etc), then you should include that in your applications, usually as part of an essay. Another way you can boost your application would be through extra curricular activities. Donors tend to favor students who have solid goals and a history of having worked toward them. They want to see that you have a passion for what you plan to study that didn't just begin on the day you started to fill out the scholarship application. So, if you haven't already done so, think hard about what you will be studying in college and get involved in extra curriculars that support that goal. For example, if you wanted to be a veterinarian, you might want to volunteer for an animal shelter or get a part time job at a pet store. If you wanted to be a teacher, you should be doing volunteer work with children. Scholarships are rarely awarded on the basis of grades alone--it's usually a combination of factors that show the applicant has the desire, the focus, and the ability to succeed at a specific goal. So, if your GPA is less than wonderful, be sure that you have something else to offer.