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.
The final fourth sections contains standard text including details such as contract information, the relationships that exist between the finance parties - in the event of more than one tender and more than one law that apply to the agreement.
Always obtain loan agreements in writing and read the fine print. One of the biggest mistakes borrowers make is entering into verbal agreements. If things go wrong there is no evidence to prove the case. Debtors should know the number of deferred payments, payment schedule, fees or penalties, and how the lender reports suspended payments to credit bureaus.
In certain cases where you have repaid some installments of a previous student loan independently, you would be given the authority of branching away the Co-borrower. This is known as Co-Borrower Release and by doing so, you ensure that the loan repayment is entirely yours. This also puts you in a position where you are not hit by the Credit History of your Co-Borrower. Both of you are separate entities speaking from the loan perspective and you would hence need to take charge of repaying your loan off.