Flexible Online Diploma for Adults 18+

Adult High School Diploma Program – Finish School on Your Terms

North Gate’s Adult Diploma Program offers a flexible, accredited path for adults 18+ to earn their high school diploma online. Study at your own pace and graduate faster while enjoying affordable monthly tuition options.

Accredited Education

Northgate Academy is accredited by Cognia and the Middle States Association, which means that colleges, employers, and the military accept the diploma your student earns.

Affordable Tuition

We offer monthly payment plans that bring the cost of a private Christian education within reach of more families.

Flexible Learning

Our self-paced courses allow students to enroll at any point in the year and to work at a pace that fits their family's schedule.

Program Overview

Northgate Academy’s Adult High School Diploma Program offers a flexible, faith-based path for adults aged 18 and older to earn a fully accredited high school diploma online. Designed for those who’ve been out of school for at least six months, this self-paced program is a supportive and accessible alternative to traditional high school or equivalency exams like the GED®, HiSET®, or TASC®. Students can work at their own pace—day or night—with up to 24 months to complete the required 21.5 credits. Courses are typically structured as six per grade level, and all instruction is delivered through our easy-to-use online platform.

Tuition is simple and affordable at just $99.00 per month, with no long-term commitment. You only pay for the months you’re enrolled, meaning if you graduate in 5 months, you pay only $495.00—a smart, cost-effective option for motivated adult learners.

With rolling enrollment, a self-paced format, and support grounded in Christian values, Northgate Academy empowers adults to finish their high school education with confidence, gaining a diploma respected by colleges, employers, and faith-based communities alike.

Starting is Easy

Want to learn more about earning your accredited high school diploma? Just enter your name and email below, and we'll send you a series of helpful emails to guide you through the process.

Online High School Courses

Explore Our High School Curriculum

At Northgate Academy, students can choose a course path that reflects their goals — and their faith. Our recommended courses are designed to support academic success while fostering spiritual growth through a Christ-centered approach. Most students follow our core Northgate curriculum, which is rooted in a biblical worldview and aligned with national academic standards. For students seeking advanced options, Northgate also offers access to Honors and AP-level courses through our accredited sister school, Excel High School. This allows students to challenge themselves academically while maintaining a strong foundation in Christian values.

Browse the full range of courses we offer in our course catalog

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Language Arts

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Mathematics

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Credits: 0.5

Course Provider: Excel High School (Secular)

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Bible Doctrines

Credits: 1.0

Course Provider: Northgate Academy (Faith-Based)

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Book of the Revelation

Credits: 1.0

Course Provider: Northgate Academy (Faith-Based)

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Introduction to the Bible

Credits: 0.5

Course Provider: Northgate Academy (Faith-Based)

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Jesus’ Ministry and Disciples

Credits: 1.0

Course Provider: Northgate Academy (Faith-Based)

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Our FAQs

How Can We Help?

Is Northgate Academy Accredited?

Yes. Northgate Academy is regionally accredited by Cognia (formerly AdvancED), the parent organization of the North Central Association CASI, the Southern Association of Colleges and Schools CASI, and the Northwest Accrediting Commission.

Northgate Academy also holds accreditation from the Middle States Association of Colleges and Schools CESS, and we are an "A+" rated, accredited member of the Better Business Bureau. We issue the same accredited high school diploma as public schools, and our programs are approved by state agencies to ensure standards are met.
Read more about our accreditation

Why do families choose Northgate Academy?

Northgate Academy offers a fully accredited, 100% online education that’s flexible, affordable, and self-paced, allowing students to study on their schedule. With open enrollment, students can start anytime and complete courses within 6 or 12 months, depending on their program. Our curriculum meets national standards and includes options for standard, honors, and AP levels to fit each student’s goals.

What sets us apart is our dedicated support team and BRYTE, our AI-powered tutor, providing personalized assistance through the Help Desk in the learning portal. Northgate Academy is committed to making high-quality, accessible education a reality for students of all ages, empowering them to succeed on their own terms.

What support will my student get?

Yes! While students have the flexibility to work independently, support is always available. Our dedicated academic and success coaches are accessible during traditional business hours through the Help Desk in the learning portal, ready to answer questions and provide guidance.

Which program is right for my student?

Northgate Academy offers flexible, accredited programs designed to support students throughout their high school journey, all built on a strong foundation of Christian faith. Our core program is for students in grades 9–12 and includes a full selection of courses aligned with national standards and presented from a biblical worldview.

Students can follow our standard Christian high school curriculum or, for those seeking greater academic rigor, choose to take Honors and Advanced Placement (AP) courses through our accredited sister school, Excel High School. These advanced courses allow students to challenge themselves while still graduating from NGA with a diploma rooted in Christian values.

For adult learners over the age of 18, we offer a separate Adult High School Diploma program designed to help students return to school and complete their education on a flexible schedule.

At every level, Northgate Academy is committed to providing an online learning experience that nurtures both academic excellence and spiritual growth.

Browse ALL FAQs in our Resource Center

Accreditation You Can Trust

See Our Accreditations

Recognized Nationwide

Northgate Academy is regionally accredited by Cognia (formerly AdvancED), with additional accreditations from NCA, SACS, NWAC, and the Middle States Association. Every transcript and diploma we issue carries that recognition, which is what colleges, employers, and other schools look for first.