Alpha School — Free Online School for Students Worldwide, Grades 6–12
Rigorous, self-paced courses in mathematics, science, computer science, languages, history, and hands-on labs — with adaptive tests, a real gradebook, and weekly assignments.
Browse coursesHow Alpha School works
Semesters & terms
Two semesters per year — Fall and Spring. Each course is a full term of lessons, quizzes, homework, and one adaptive test.
Self-paced lessons
Every course has 4–6 lessons with worked examples, key vocabulary, and "try it yourself" practice. Learn on your schedule.
Real grading
Quizzes, homework checkoffs, and adaptive tests flow into your gradebook automatically. Course averages convert to letter grades on a 4.0 GPA scale.
Adaptive testing
Each course ends with a 15-question adaptive test that adjusts difficulty to your ability and reports a grade-level equivalence.
Grading scale
| Letter | Percentage | GPA points |
|---|---|---|
| A | 90–100 | 4.0 |
| B | 80–89 | 3.0 |
| C | 70–79 | 2.0 |
| D | 60–69 | 1.0 |
| F | Below 60 | 0.0 |
Subjects offered
Alpha School Podcast
Study tips and subject spotlights from the Alpha School faculty.
Episode 1 — How to Study Smarter
Spaced repetition, active recall, and the study habits that actually work.
Episode 2 — STEM Pathways
From Algebra I to Calculus: how the math and science sequence fits together.
Episode 3 — Learning Languages
Nine languages, one method: how Alpha School teaches a new script and sound system.
Episode 4 — College Prep
Episode 5 — Languages
Episode 6 — Science Fair
Ready to start learning?
Twenty-seven courses across six subject groups — free to explore, graded as you go.
Browse all 27 courses