Amber, check out some local, in home providers. They are generally a lot less expensive than big name chain types of providers. The laws in Missouri aren't as strict as they are in Kansas (can't even care for a relative's kids unless you are licensed) so you will have more options. Check local papers or even signs posted around the neighborhood.
Also look at what the Park Hill Education Center has to offer. I know that they have some all day preschool classes, even over the summer, so that may help with Madison at least. Last I checked, they also offered some summer school types of programs to school aged kids, even kids not in the district.