T.,
I know how financial problems can overpower you. There arn't really any easy answers, unless you have a relative or someone who is ready to "bail you out", you are on your own.
Put the brakes on the spending! You could also have a part time job while going to school - many people do it successfully.
Talk to some banks about a consolidation loan to refinance your house and roll your credit card debt into the same loan. That would give you some breathing room right away. But at the same time you and your husband need to work on establishing a budget that you can live within. You probably have heard this already. Unfortunately, as adults, we are suppose to have all the answers and make all the right decisions - it doesn't happen all the time!
If the financial problems continue you may need to sell the house and rent to lower your monthly expences till you are able to get ahead again. It's better to sell intentionally than to forclose.
Good luck and stay strong! You arn't just pulling through this for yourself, your doing it for your kids. You and your kids may not realize it, but they are aware and will learn a lot from how you handle this.
S.