Castelar Elementary is located in the enclave of South Omaha. Its neighborhood and community are rich in cultural diversity. Students are served in pre-kindergarten through sixth grade. Class size averages from fifteen to twenty students in the primary rooms and twenty to twenty-five in the intermediate classrooms. Besides offering the regular elementary curriculum, Castelar Elementary is an English as a Second Language Comprehensive Center and Dual Language School.

Castelar not only serves the academic needs of children, but it also reaches out to its community. The school offers a community outreach program and serves as a community liason by assisting families who are new to the city and who have need for information and material resources.

Staff and parents share the common vision that all students are eager and successful learners. This common mission helps to ensure that the highest quality educational opportunities are offered and that all children are able to reach their highest potential.