An accredited high school diploma is a diploma issued by a school that has received accreditation from a recognized third-party accrediting organization JMHS is both regionally and nationally accredited you can learn more about our accreditations and how the process works on our Student Life Blog. Earning an accredited high school diploma can help qualify you for employment where a high school diploma is required. Many alumni have gone off to pursue higher education or have found work in skilled trades using our career pathways high school diploma program.