Online Adult High School Diploma

The Keystone School

Keystone offers a flexible online adult-focused high school diploma, created for busy adult learners who want to complete their high school education.

Online Adult High School Diploma

Your education and career goals are within reach with a flexible, online, self-paced learning option that leads to a diploma. Keystone's adult high school diploma program lets you choose your online courses. Students who complete the adult high school program earn a diploma from an accredited school.

Earn Your Diploma at Any Time, Any Place

What makes the Keystone adult high school diploma program unique is the commitment to flexibility and convenience. Online, self-paced courses allow you to fit learning into your schedule at any time, any place. Whether you plan to go directly into the workforce or have already started your career, earning a high school diploma can be a foundational step to help you meet your goals. No matter where you are in your educational or career journey, our goal remains the same: helping adult learners thrive.

Adult High School Diploma Curriculum

Keystone offers flexible courses for busy adult learners to help you achieve your career goals. With a structured approach, you can earn a high school diploma for adults in just 21 months.

The curriculum of the Keystone Adult learning Career High School Diploma Program is mastery based, allowing you to take the time you need to learn the material. Most units begin with a pre-test that establishes what you already know about the topic. Based on the results of the pre-test, you may be able to skip past material you already know. This allows you to focus your time and attention only on what you need to learn.

The curriculum includes career-focused core and elective courses suited specifically to adult learners. Lessons support the development of professional skills through academic topics while real-world examples emphasize the connection between course work and careers.

Courses include all core subject areas and electives geared toward specific career fields. Each field gives you an introduction to topics within that career and helps guide your future career aspirations.

What Sets Keystone Apart

Cost to Enroll

The Keystone Adult Learning Career High School Diploma Program for adults is available for the affordable cost of $99/month for the length of time it takes to earn your high school diploma. The online, multimedia-rich curriculum is at your fingertips so you can complete courses at your own pace, whenever and wherever convenient for you. The number of months to completion is based on the number of classes needed. Your Graduation Advisor will help you establish a plan to complete two half-credit courses each month. New students can try Keystone risk free with our 30-Day Money Back Guarantee**.

Transferring Your Credits

Most of our students need to transfer credits from other high schools or homeschooling programs. To facilitate the process, Keystone offers a free transcript or homeschool portfolio evaluation for transferring students. If you are a foreign student, we do provide evaluation services, but we do it through an external service agency due to the complexities of foreign educational systems. Evaluation of foreign/international transcripts can take up to 30 days depending on the complexity and research required.***

Adult Diploma Accreditation

The Keystone School is accredited by Cognia and Middle States Association of Colleges and Schools' Commissions on Elementary and Secondary Schools. Learn more about Keystone’s Accreditation.

How to Enroll

Enrolling in Keystone’s adult diploma program is easy—just get in touch with us to start your journey toward a high school diploma. Once you’re enrolled, you can start picking courses and studying toward your high school diploma.

Online Adult Diploma FAQs

Your questions about the Keystone Adult Diploma program, answered.

Get Started Today

Ready to achieve your educational and career goals? Experience the high-quality education you deserve with the flexibility you need. Enroll today in the Keystone Adult Learning Career High School Diploma Program.

Request information

Due to U.S. Treasury requirements, Keystone cannot offer refunds to students with a non-U.S. address. Money paid will be refunded upon receipt of returned course materials. To request cancellation, contact Student Services at 800.255.4937. Please note that The Keystone School is not able to accept enrollments from students located in the following countries: Bahrain, Crimea Region, Cuba, Iran, Kuwait, Lebanon, North Korea, Syria, Oman, Qatar, Saudi Arabia, United Arab Emirates, and member countries of the EU.