Encourage the enrollment of students from various cultures, ethnicities and economic backgrounds. This can be done through scholarships and through using recruiters to attract these students.
Hire administrators of various cultural backgrounds. This helps to ensure that the school is catering to the needs of all its students and not just a particular ethnicity or economic class.
Form a committee dedicated to fostering a diverse student committee. The committee can be composed of administrators, educators and students. The more diverse the committee, the more effective it is likely to be. The committee can give suggestions regarding how to support cultural holidays, educational opportunities and study abroad possibilities.
Speak to the students in your school who come from various ethnicities and cultures to get their ideas and thoughts on how diverse the school is and what can be done in the future to further improve on a diverse environment.