Now talking about private loans for students we can name the following categories:
•    Signature Student loan - is the most popular after-Stafford loan. If grants, scholarships, and Federal Stafford loans have not covered the total cost of your education you can turn to Signature Student loans.
•    Community College loan- If grants, scholarships, and Federal Stafford loans have not covered the total cost of your community college education, the Signature Student Loan for Community Colleges can help.
•    Tuition Answer Loan - is a practical, private student loan that allows creditworthy parents, working adults, undergraduate and graduate students, or those with a creditworthy cosigner to borrow from $1,500 up to the calculated cost of attendance or maximum $40,000 per year to cover any qualified higher education expense.
•    Continuing Education Loan - is a private, credit-based loan that provides financing for postsecondary students not seeking degrees and for part-time, degree-seeking students.
•    Career Training Loan - is a private, credit-based student loan for technical training or trade school, online courses, and other continuing education programs.

Separately standing type of loan is Federal Consolidation Loan - it is for those students who are in their repaying period or for parents who would like to prolong the repaying period for their Federal PLUS loan and plus  obtain fixed interest rate for the life of the loan.
Loans for International students: it is to help the American students who want to study abroad or to help foreign students willing to receive education in the USA.