States issue need-based grants to students who need help paying for school.  If your EFC is low, and your federal financial aid doesn’t cover your tuition, state grants boost your college fund when you need it most.  For instance, Minnesota Office of Higher Education provides state grants to low and moderate income students, with nearly 80% of funds distributed to students with family incomes below 50K/year.
The National Science and Mathematics Access to Retain Talent (SMART) Grant picks up where the Academic Competitiveness Grant leaves off—providing funding for low-income third and fourth year college students. Eligible students must be Pell Grant recipients, academically talented and majoring in STEM fields or  high need foreign languages.  SMART Grant annual maximums are up to $4000 per qualified student.
The American Institute of Certified Public Accountants sponsors a variety of grants and scholarships for minority students pursuing a career in accounting. The AICPA Minority Doctoral Fellowship  awards $12,000 to minority students completing their doctoral program in accounting. The fellowship is open to African-American, Native-American and Hispanic students.

The Institute of Electrical and Electronics Engineers offers a number of grant and scholarship programs, including the IEEE Computational Society Summer Research Grant for graduate students. This grant funds the research of deserving student scholars into the areas of neural networking and evolutionary computation. Award amounts range from $1000 to $4000.
Your school will notify you if you must repay part of the grant. From that point, you will have 45 days to either pay that portion of the grant back in full or enter into a satisfactory repayment arrangement. If you enter into a satisfactory repayment arrangement, the school may assign the debt to ED for collection or may keep the debt and allow you to make payments directly to them.
While military sponsored grant programs offer valuable financial assistance, it should be noted that they are only available to enlisted members of the armed services. Serving one’s country in a military capacity is a noble and honorable choice, but it should not be made lightly. Students considering military sponsored financial aid for college should be certain that they fully understand their obligations as enlisted personnel in the U.S. Armed Forces.
Every state maintains its own college grant programs, and they are typically only available to student residents. While it would be impossible to list every education grant from each state in the union in the space available here, the following examples will give students an idea of the types of programs that may be available through their own state governments. College-bound students are encouraged to visit their state’s higher education website for detailed information on any and all merit-based and need-based grant programs which may be available.
Once students have exhausted the available Federal and state supported grants, they may wish to look to other sources for financial assistance. Many grants for college-bound students can be found in the private sector. Corporations and professional associations often offer grants for deserving students who are pursuing degrees in fields closely allied to that business or organization. College grants can also be found through religious organizations, as well as clubs and associations dedicated to community service. These grant programs may have very specific eligibility requirements, but they do offer substantial financial assistance to those students who meet the necessary criteria.
Federal grant programs are driven by the congressional funding that fills the coffers. As a result, maximum grant awards and general availability change every year.  Currently, annual Pell Grant award maximums hover around $5000 per student.  Some government grants, like FSEOG are distributed on a first-come first-served rotation that continues until funding is exhausted, so time is of the essence. To maximize your access to federal grant dollars, it is essential that you file your FAFSA as early as possible.
It can also be helpful to understand how the Federal Student Aid Office uses the information on the FAFSA to decide how much aid each student gets. The financial details are used to calculate your Expected Family Contribution (EFC). This is the Federal Student Aid office’s estimate of what your family should reasonably be able to pay toward college costs, based on these factors:

Students receiving financial aid are required to complete 67 percent of the classes they attempt with a 2.0 GPA to continue receiving aid. For instance, you are awarded aid for Fall/Spring of the academic year, are making progress, and started in the fall semester with 12 credit hours and withdrew from a 3 credit hour class. You will have completed 75% of the classes attempted. Your aid is not in jeopardy. If you complete less than 67% the fall semester and/or your GPA falls below 2.0, you will receive a letter stating you are on warning; your aid for spring is not jeopardized. However, if you do not complete 67% of the total classes you attempt with a 2.0 GPA for the fall/spring semesters, you will be denied further aid.