Harmony Heights is a chartered high school located in Oyster Bay, New York. Established in 1974, Harmony Heights has been providing a supportive and therapeutic environment for girls, grades 8-12, with special emotional needs for 39 years.

The school aims to help students who are dealing with emotional problems such as depression, eating disorders, and anxiety disorders, among others.

Harmony Heights is accredited by the Middle States Association and offers both a residential and a day school program. Residential students are housed in a large estate and receive transportation to the day school.

In addition to daily high school curriculum, students are provided with programs such as recreational therapy, individual and group therapy, and behavior modification. Harmony Heights also offers a drama program, a horseback riding program, and other worthwhile school activities.