Here is an encouraging article written by Christine Miller, who maintains the Classical Christian Homeschooling website:
My name is Christine Miller and I was an imperfect homeschooling mother. My husband was an imperfect homeschooling father. Our family was not the poster family for the perfect Christian homeschooling family that you might have pictured in your head. I’m certain that in telling this story, I’ll be reaching out and embracing the hearts of many a discouraged homeschooling mother who has similar failures and difficulties… and my message to her – and to YOU – is hope in Christ. Miracles still happen today – in the most ordinary places – just like the ones that have happened in our family. I pray that you can look beyond your circumstance and see that God is on the other side of it, even if you feel like a homeschool failure today.