"Investment banks" create loan agreements that cater to the needs of the investors whose funds they attempt to attract; "investors" are always sophisticated and accredited organizations not subject to bank regulatory supervision and the need to cater to the public trust. Investment banking activities are supervised by the SEC and their main focus is on whether the correct or proper disclosures are made to the parties who provide the funds.
Private student Loans is another alternative that comes into force rescuing students who have a bad credit history. I have heard of many cases where students apply for loans as a supplement with their Stafford or Perkins loans. In other cases, I have seen people applying for student loans with private organizations when their Stafford loan amount comes to an end.
Lenders may require borrowers to submit a financial letter of hardship which explains the circumstances causing them to require a loan deferment. Hardship letters are usually required with federal student loans and real estate transactions such as loan modifications.
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.