Course Catalog

Real courses across every subject and level — from Kindergarten through PhD.

Level

Subject

44 courses

+450 XP
4 lessons
Mathematics · High School 4.8

Algebra I

Linear equations, inequalities, and functions — the core algebra every high schooler needs.

+9.9k
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+450 XP
4 lessons
Science · High School 4.8

Biology

The science of life: cells, DNA, evolution, and how organisms work.

+8.9k
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+520 XP
4 lessons
Computer Science · High School 4.8

Web Development

Build web pages from scratch: structure content with HTML and style it with CSS.

+8.1k
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+450 XP
4 lessons
Mathematics · High School 4.6

Geometry

Reason about shape and space: angles, triangles, the Pythagorean theorem, and proof.

+7.6k
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+300 XP
3 lessons
English · High School 4.7

Essay Writing

From blank page to strong argument — thesis, structure, evidence, and revision.

+7.6k
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+320 XP
3 lessons
Mathematics · High School 4.7

Algebra II

Quadratics, exponents, logarithms, and functions — the algebra that opens the door to calculus.

+7.3k
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+450 XP
4 lessons
Science · High School 4.7

Chemistry

Atoms, bonding, reactions, and the periodic table — matter and how it changes.

+7.2k
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+450 XP
4 lessons
English · High School 4.7

Literature & the Essay

Read closely and write a persuasive literary essay with a clear thesis.

+7.1k
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+470 XP
4 lessons
Science · High School 4.9

Astronomy

Explore the solar system and beyond: planets, the Sun, and the life cycle of stars.

+6.9k
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+480 XP
4 lessons
Science · High School 4.8

Physics

Motion, forces, energy, and waves — the rules the universe runs on.

+6.8k
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+330 XP
3 lessons
Science · High School 4.8

Genetics & Heredity

Genes, alleles, and Punnett squares — how traits pass from parents to the next generation.

+6.8k
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+480 XP
2 lessons
History · High School 4.8

Economics & Personal Finance

Supply, demand, and your own wallet: how markets set prices, and how budgeting and compound interest build a future.

+6.7k
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+440 XP
4 lessons
English · High School 4.8

Creative Writing

Find your voice in fiction and poetry: build characters, scenes, and vivid imagery.

+6.4k
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+450 XP
4 lessons
History · High School 4.7

United States History

Founding, Civil War, and the 20th century — the events that shaped a nation.

+6.3k
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+340 XP
3 lessons
History · High School 4.7

The Modern World: 1900–Now

The century that made today — world wars, the Cold War, decolonization, and globalization.

+6.3k
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+460 XP
3 lessons
Mathematics · High School 4.7

Statistics

Make sense of data: mean, median, and mode, plus the basics of probability and chance.

+6.1k
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+470 XP
3 lessons
Science · High School 4.8

Human Anatomy & Physiology

How the body works: the skeletal, muscular, circulatory, and nervous systems, and how they cooperate to keep you alive.

+6.1k
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+300 XP
3 lessons
World Languages · High School 4.8

Korean for Beginners

Hangul, greetings, and everyday words — begin your Korean journey with confidence.

+6.1k
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+520 XP
3 lessons
Mathematics · High School 4.7

Trigonometry

Sine, cosine, and tangent from triangles to the unit circle — the math of angles, waves, and rotation.

+5.9k
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+520 XP
3 lessons
Computer Science · High School 4.8

Cybersecurity Fundamentals

Think like a defender: passwords, encryption, phishing, and how the internet keeps secrets safe.

+5.9k
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+420 XP
3 lessons
Arts · High School 4.8

Digital Photography

Make better pictures: exposure, composition, and light — how a camera turns a scene into an image.

+5.8k
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+300 XP
3 lessons
World Languages · High School 4.8

Italian for Beginners

Greetings, numbers, and café phrases — start speaking Italian from your very first lesson.

+5.8k
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+490 XP
3 lessons
Science · High School 4.8

Electricity & Circuits

Voltage, current, and resistance — build the mental model behind every circuit, from a flashlight to a laptop.

+5.7k
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+500 XP
4 lessons
Computer Science · High School 4.6

Programming with Java

An AP-style introduction to object-oriented programming with Java.

+5.6k
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+320 XP
3 lessons
Arts · High School 4.8

Animation Basics

Bring drawings to life — frames, keyframes, timing, and the principles of motion.

+5.5k
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+460 XP
4 lessons
Science · High School 4.7

Environmental Science

How ecosystems work and how humans affect them — energy flow, pollution, and climate change.

+5.4k
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+450 XP
3 lessons
History · High School 4.7

Civics & Government

How power works: constitutions, the three branches, rights, and how a citizen shapes a nation.

+5.4k
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+340 XP
3 lessons
Mathematics · High School 4.8

Probability & Combinatorics

Counting, chance, and combinations — from coin flips to how many ways a team can line up.

+5.4k
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+500 XP
3 lessons
Mathematics · High School 4.6

Precalculus

Bridge algebra and calculus: functions, domain and range, and an introduction to trigonometry.

+5.3k
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+300 XP
3 lessons
World Languages · High School 4.8

Arabic for Beginners

The script, sounds, and first phrases of Arabic — greet, count, and introduce yourself.

+5.3k
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+440 XP
3 lessons
English · High School 4.8

Public Speaking & Debate

Speak with confidence: structure an argument, handle nerves, and persuade a live audience.

+5.2k
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+330 XP
3 lessons
History · High School 4.8

History of Asia

Empires, philosophies, and inventions across China, India, Japan, and beyond.

+5.1k
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+450 XP
2 lessons
World Languages · High School 4.9

American Sign Language I

A visual language with its own grammar: fingerspelling, first signs, and the facial expression that carries meaning.

+4.9k
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+300 XP
3 lessons
English · High School 4.8

Reading Poetry

Unlock the music and meaning of poems — imagery, meter, rhyme, and figurative language.

+4.9k
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+460 XP
3 lessons
English · High School 4.8

Journalism & Media Literacy

Report the news and read it wisely: sourcing, the inverted pyramid, and telling fact from opinion in a noisy feed.

+4.8k
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+330 XP
3 lessons
History · High School 4.8

History of Africa

Kingdoms of gold, great cities, and trade — Africa's rich history from Egypt to independence.

+4.7k
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+450 XP
3 lessons
World Languages · High School 4.8

Japanese I

Begin Japanese: hiragana, greetings, and simple sentences with the particles that hold them together.

+4.6k
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+400 XP
3 lessons
Arts · High School 4.7

Theater & Drama

Step onto the stage: the parts of a play, basic acting, and how a story is staged.

+4.6k
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+300 XP
3 lessons
World Languages · High School 4.7

Russian for Beginners

Cyrillic, greetings, and first words — read the alphabet and start speaking Russian.

+4.6k
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+300 XP
3 lessons
Arts · High School 4.7

Fashion Design

From mood board to garment — silhouette, textiles, color, and the design process.

+4.4k
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+450 XP
4 lessons
World Languages · High School 4.7

Mandarin Chinese I

Tones, pinyin, and your first characters and phrases in Mandarin.

+4.2k
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+420 XP
3 lessons
Arts · High School 4.6

Art History

From the Renaissance to modern movements — how to look at and talk about art.

+3.3k
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+300 XP
3 lessons
Arts · High School 4.7

Sculpture & 3D Form

Shape space itself — carving, modeling, and casting three-dimensional form.

+3.3k
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+440 XP
3 lessons
World Languages · High School 4.7

Latin I

The language beneath the languages: first declensions, core vocabulary, and the Roman words hiding inside English.

+3.1k
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