Below are some selected encyclopedias and handbooks that can help you understand concepts in education.
The CREDO database is rich with online encyclopedias and reference resources. It includes over 500 full-text reference books on all topics. Browse the results of a search on art education.
Here are selected titles that might be of interest:
Encyclopedia of Special Education
Handbook of Research on the Education of Young Children
Key Concepts in Early Childhood Education and Care
Philosophy of Education