There are many ways to give your child a good Catholic education, the way God led our family is through homeschooling using a formal Catholic program. Here are some programs with which I'm familiar:

Mother of Divine Grace (MODG)
Seton Home Study School
Kolbe Academy Home School

There are other programs including Catholic Heritage Curriculum, Our Lady of Victory, and Our Lady of the Rosary. While these may be good programs, I cannot vouch for them. MODG, Seton, and Kolbe, however, we've either used or we know Catholic families who are faithful to the teachings of the Church who have used them.