Prior to entering into a loan agreement, the "borrower" first makes representations about his affairs surrounding his character, creditworthiness, cashflow, and any collateral that he may have available to pledge as security for a loan. These representations are taken into consideration and the lender then determines under what conditions (terms), if any, they are prepared to advance money.
The content of the loan agreement includes the precise details of the agreement that has transpired between lender and debtor. Not only that, the agreement should also consider the standard government laws that is already in effect or established. Since the laws were created to protect all people, it is beneficial to both parties concerned.
These are just a couple of reasons why people need the money. The most common financial resource for these common problems is to get a loan. Anytime you are considering getting a loan from a financial or lending institution, it is imperative that you must sign a loan agreement.
It is an unsaid rule in the world of loans that one needs a co-signer to ensure that the student loan gets approved. That said, it does not mean that you would not get loans if you do not have a co-signer to sign on your agreement. There are some lenders in the market who would offer loans to you with you having to worry about the co-signer.