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18,188 lessons across 33 subjects. Every subject is one ordered walk; the bar shows how far you've come.
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CLEP and DSST college subjects
Earn college credit affordably with structured, prerequisite-ordered lessons.
- ACT Preparation ACT College 622 lessons
7.5hruntime - American Government CLEP College 295 lessons
2.5hruntime - American Literature CLEP College 641 lessons
5.9hruntime - Analyzing and Interpreting Literature CLEP College 1,090 lessons
7hruntime - Biology CLEP College 1,133 lessons
8.1hruntime - Chemistry CLEP College 665 lessons
6.3hruntime - College Algebra CLEP College 263 lessons
2.6hruntime - College Composition CLEP College 575 lessons
6.3hruntime - Computer Science DSST College · Professional · IT 326 lessons
2.6hruntime - Educational Psychology CLEP College 504 lessons
4.7hruntime - English Literature CLEP College 644 lessons
5.8hruntime - Ethics and Values DSST College · Professional · Leadership 210 lessons
1.8hruntime - History of the United States I CLEP College 820 lessons
7.4hruntime - History of the United States II CLEP College 890 lessons
7.9hruntime - Human Growth and Development CLEP College 1,005 lessons
8.8hruntime - Principles of Macroeconomics CLEP College 484 lessons
5.5hruntime - Principles of Microeconomics CLEP College 458 lessons
5.2hruntime - Psychology CLEP College 691 lessons
4.9hruntime - Social Sciences and History CLEP College 640 lessons
5.7hruntime - Sociology CLEP College 537 lessons
3.9hruntime - Western Civilization I CLEP College 545 lessons
5hruntime - Western Civilization II CLEP College 584 lessons
5.2hruntime
Professional development
Build job-ready skills in healthcare, IT and leadership.
- Artificial Intelligence Professional · IT 292 lessons
2.5hruntime - Evidence-Based Practice Professional · Healthcare 1,114 lessons
7.5hruntime - Generative AI at Work Professional · IT 199 lessons
2.5hruntime - Leading AI at Work: Governance, Rollout and Practice Professional · IT 186 lessons
2.4hruntime - Medical Assistant Prep Professional · Healthcare 638 lessons
6.5hruntime - Medical Terminology Professional · Healthcare 615 lessons
4.7hruntime - Tech in Surgery Prep Professional · Healthcare 611 lessons
8hruntime - The Lost ARC Leadership & Professional Learning Professional · Leadership 232 lessons
2.1hruntime - The M-CaReM-AI Method: Defining Work for AI Professional · IT 202 lessons
2.9hruntime
General subjects
Foundational subjects that do not map to a CLEP or DSST exam.
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- Watch 20 secondsOne idea, said once, plainly, with the text beside the video.
- Tap NextThe next lesson only uses ideas you have already met.
- Check yourselfFree quizzes and a final, then a certificate and badge if you want one.
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