Select a curriculum that complements the student. Do not obtain something that is too easy or too difficult. But remember, the best teachers state the main reason for their success is having high expectations for their students. Select a curriculum that is a little above their expectations instead of below them. It is up to the teacher to inspire, encourage, and direct the students, having them believe that they can do anything they set their hearts to.
Inspiration is very important.
Our main source is God. Pray over the works of your children's hands. Invite the Holy Spirit into your classroom. Also, play classical music during art time. Visit the libraries and get them interested in works by the great masters.