Take the average starting salary for private sector jobs and subtract taxes. Then subtract the estimated yearly loan repayment. If the resulting number is negative--probably not worth it. If the resulting number is enough to live on...why not? Does CW have a loan repayment program? Some schools have programs that repay all or part of your loans depending on how much money you make, even if you job is in the private sector.
i think this is a great way to do it if you don't expect your income to ever increase over what you would earn your first year