When Principles Collide

What do you do when your principles collide?  John and I have come to a dilemma this year, which has left us to pick one principle over another. 
Last year, we sent our children to a private school under the principle that our children need to be at a christian school for their elementary education.  After a year of unexpected debts, we will not be able to afford the school again next year, which breaks our hearts.  The only way to afford the school is for me to get a job outside the home, which clashes with our principle of me being a stay-at-home mom.  That leaves us with homeschooling or public school.  The public school is five minutes from our house and has a wonderful reputation.  Some of the teachers are LU graduates.  Homeschooling would take a lot of research on my part and John's least favorite option. 
What do you do when principles collide?  Simply pray.