Flexible Online Diploma for Adults 18+
Adult High School Diploma Program – Finish School on Your Terms
Accredited Education
Northgate Academy offers regionally accredited courses, ensuring that diplomas are recognized by colleges, employers, and the military.
Affordable Tuition
We offer low monthly tuition options, making high-quality education accessible to a wide range of students, including those seeking an adult diploma.
Flexible Learning
Our self-paced, online programs allow students to learn on their own schedule, making it easier to balance education with other commitments.
Program Overview
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
Language Arts
Mathematics
Science
Social Studies
General Electives
Biblical Studies
English 9
English 10
English 11: American Literature
English 12: British Literature
Algebra 1
Integrated Algebra
Algebra 2
Math Models & Applications
Geometry Concepts
Pre-Calculus
Physical Science
Biology: God’s Living Creation
Chemistry: Matter and Energy
Physics: The Foundational Science
Building Resilience & Navigating a Global World
Economics: Work and Prosperity
Finance
Health & Fitness
Health & Fitness: In Christian Perspective
Introduction to Business
Introduction to Computer Applications
Life Skills for the Maturing Christian Course
Marketing
Music Appreciation
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Bible Doctrines
Book of the Revelation
Genesis – First Things
Jesus And His Followers
Kings of Israel
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Our FAQs
How Can We Help You?
Is Northgate Academy Accredited?
Northgate Academy is regionally accredited by Cognia, the parent organization of the North Central Association CASI, the Southern Association of Colleges and Schools CASI, and the Northwest Accrediting Commission.
In addition to being regionally accredited by Cognia, NCA, SACS, and NWAC, Excel High School has prestigious accreditation by the Middle States Association of Colleges and Schools CESS. We are also an "A+" Rated, Accredited Member of the Better Business Bureau. Northgate Academy issues the same accredited high school diploma as Public Schools. Northgate Academy is approved by numerous State agencies to ensure standards are met.
Read More about Our Accreditation Here
What makes Northgate Academy different from other online schools?
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.
Does Northgate Academy offer academic support?
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.
What types of programs does Northgate Academy offer?
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.
Accreditation You Can Trust
Recognized & Respected Nationwide
At Northgate Academy, we are proud to be regionally accredited by Cognia, along with additional accreditations from NCA, SACS, NWAC, and the Middle States Association. Our programs meet the same rigorous standards as public schools, giving you the confidence of earning a well-respected diploma.
Global Recognition for Our Accredited Diplomas
Northgate Academy’s regionally accredited diploma is accepted by colleges and universities around the world. With our recognized accreditation, you can confidently pursue higher education wherever your journey takes you.
