- American School:
Offers flexible learning for students in grades 9-12. Accredited by AdvancED and Middle States Association of Colleges and Schools.
- Connections Academy:
Provides online public school education for students in grades K-12, including high school. Accredited by Cognia and various state education departments.
- Florida Virtual School (FLVS):
Offers online courses and diploma programs for students in Florida and other states. Accredited by the Florida Department of Education and other regional accrediting bodies.
- James Madison High School:
An online high school accredited by the Accrediting Commission of the Distance Education and Training Council (DETC).
- K12:
Delivers online school programs for students in various states, including high school curricula. Accredited by various regional accrediting bodies.
- National High School:
An accredited online high school that provides a flexible and personalized learning experience.
- Penn Foster High School:
Accredited by the Middle States Association of Colleges and Schools (MSA). Allows students to customize their schedules and earn a diploma at their own pace.
- University of Nebraska High School:
Provides accredited online high school courses and degree programs. Accredited by the North Central Association of Colleges and Schools (NCA).
- Virtual High School:
Offers a comprehensive online high school program with a variety of courses and extracurricular activities. Accredited by the Middle States Association of Colleges and Schools (MSA).
- Whitmore School:
An accredited online high school that offers personalized learning experiences and a flexible curriculum.
Before choosing an online accredited high school diploma program, it's essential to research and verify its accreditation status. Accreditation ensures that the school meets specific quality standards and is recognized by colleges and universities for further education.