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:
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.