A Top-Ranked Best Private Online School For International Students & U.S. Expats

Why Choose CMASAS

We provide a fully accredited, flexible, mastery-based online K–12 education that works anywhere in the world. Wherever you go, CMASAS goes with you—ensuring educational continuity, emotional support, and a sense of belonging across borders. CMASAS ensures no gaps in learning, no lost credits, no need to start over. Your education stays consistent - even when everything else changes. At CMASAS, you can earn a U.S. diploma that prepares you for the world.

Globally Accessible Learning and Continuity in Education

If you have internet, you have access to your full curriculum, teachers, and academic support—anytime, anywhere in the world. Our international online high school platform keeps students on track no matter their location. Students keep their teachers, courses, and progress—no lost credits or curriculum gaps—making us one of the best online schools for expats.

Asynchronous, Self-Paced, Mastery-Based Learning

Our asynchronous online school model adapts to your life abroad, allowing students to balance academics with travel, cultural experiences, and time zone differences and learn at their own pace. No rigid class times. No missed learning. Students progress with confidence, demonstrating 80%+ mastery.

WASC-Accredited & NCAA-Approved

CMASAS is a fully accredited online school recognized by the Western Association of Schools and Colleges and offers NCAA-approved courses—ideal for student-athletes overseas and college-bound learners. Your diploma is recognized and respected worldwide.

Personalized Education Plans (PEPs) and Dedicated Support

Every student receives a customized learning plan and dedicated support (weekly check-ins with a personalized education coach and expert course instructors), Through our Personalication approach, we co-create a learning plan that reflects your child’s interests, pace, and goals—whether they’re preparing for a U.S. diploma abroad, an international university pathway, or skill-building for their future.

Graduate with a Recognized U.S. Diploma and Prepare for Top Universities Worldwide

Graduate with an accredited U.S. high school diploma accepted by universities globally. CMASAS prepares students with the academic rigor and credentials needed for college admission in the U.S. and abroad. We offer AP and Honors courses, Dual Enrollment opportunities, and NCAA-approved curriculum.

Social Connections with a Global Community

From online clubs, homerooms, leadership groups, and virtual assemblies to shared interest groups, CMASAS fosters belonging for globally mobile students. Friendships thrive across time zones and continents.

Why A U.S. High School Diploma? 

Earning an accredited U.S. high school diplomas online opens doors worldwide.

Key Benefits:

• University Access: Recognized by top universities in the U.S. and internationally
• Flexible Pathways: AP, Honors, and Dual Enrollment opportunities
• Holistic Education: Emphasis on critical thinking, creativity, and communication
• English Proficiency: Strong academic English foundation

• Global Mobility: Transferable credentials across countries

   

Made for Families Like Yours

Rooted in Our Mission to Care, Empower, and Connect

At CMASAS, we believe education should travel with your family—and grow with your child. We make five promises to every student, no matter where they live: