tuition organization private schools

What resources can be used to get help to pay for private education for my children?
My wife and I have 5 children between us. We are ready to send our 12, 9 and 3 years for private schools. Our 12 and 9 years, our currently enrolled in Catholic education. We wanted send our 3 years in a Montessori school for preschool, but we can not afford RightNow. I'm desperate for help to pay tuition for education of our children so that we can ensure that our children receive the best education. I emailed several organizations and even tried to use military resources to be military but have not found any help.
One of the best resources I've found as to pay for my daughter is the leading studies http://www.schoolloans.com/. Since I am not the best of the Internet, it would be useful, but I found a great deal of information about private giving needs of their tuition because of the less acceptable for public schools in our region. I've been able to finance her senior year of high school in a school private and now attends a private school with financial support that I found on the site.
Mary Theroux on the Independent Scholarship Fund