One thing that surprised me that I never would have guessed when I was 23:
You could have no mortgage, no car payment(s), no debt of any kind, no monthly "subscriptions", no rental fees or services, food completely covered by Food Stamps, and STILL spend $2500/month on BASIC SUPPORT of your family. That's $30K a year!
Go ahead and re-read the major items that are ZERO in the budget.
What does that leave? What costs $2500 a month? Well, $500 of that is "cost sharing" Christian co-op health insurance for the 2 parents. Another $500 is property taxes. The rest is electricity, water, internet, gasoline, car insurance, house/property/car maintenance, household goods/supplies/equipment, and HOMESCHOOLING.