# Powerhouse Prep

> Free practice tests, study guides, and recommended study resources for CLEP, DSST, AP, and other credit-by-exam tests. Each exam page includes an overview of the test, a topic-by-topic study guide, ten sample multiple-choice practice questions with answers and explanations, and a curated list of recommended study books and tools.

## About

Powerhouse Prep is a study-resource site for adult learners and college students taking standardized credit-by-exam tests (College-Level Examination Program / CLEP, DANTES Subject Standardized Tests / DSST, Advanced Placement / AP, and the GED). The site does not sell its own course; it provides free study material and links to third-party study guides (REA, Mometrix, the official College Board and Petersons practice tests, Flying Prep, InstantCert) when relevant.

Each exam page is structured the same way:
1. Brief overview of the exam and what's on it
2. Topic-by-topic study guide based on the official outline
3. Ten sample practice questions with collapsible answers and explanations
4. Recommended study resources (free flashcards, the official practice test, and a topic-specific study guide)

## Top-level pages

- [Home](https://www.powerhouseprep.com/): Site overview
- [All CLEP exams](https://www.powerhouseprep.com/clep/): Listing of every CLEP exam covered
- [All DSST exams](https://www.powerhouseprep.com/dsst/): Listing of every DSST exam covered
- [All AP exams](https://www.powerhouseprep.com/ap/): Listing of AP exams covered
- [Other exams](https://www.powerhouseprep.com/other/): GED and others
- [Sitemap](https://www.powerhouseprep.com/sitemap.xml)

## CLEP exams

- [American Government](https://www.powerhouseprep.com/clep/american-government/): Practice test and study guide for CLEP American Government
- [American Literature](https://www.powerhouseprep.com/clep/american-literature/): Practice test and study guide for CLEP American Literature
- [Analyzing and Interpreting Literature](https://www.powerhouseprep.com/clep/analyzing-and-interpreting-literature/): Practice test and study guide for CLEP Analyzing and Interpreting Literature
- [Biology](https://www.powerhouseprep.com/clep/biology/): Practice test and study guide for CLEP Biology
- [Chemistry](https://www.powerhouseprep.com/clep/chemistry/): Practice test and study guide for CLEP Chemistry
- [College Algebra](https://www.powerhouseprep.com/clep/college-algebra/): Practice test and study guide for CLEP College Algebra
- [College Composition Modular](https://www.powerhouseprep.com/clep/college-composition-modular/): Practice test and study guide for CLEP College Composition (and the Modular variant)
- [College Mathematics](https://www.powerhouseprep.com/clep/college-mathematics/): Practice test and study guide for CLEP College Mathematics
- [English Literature](https://www.powerhouseprep.com/clep/english-literature/): Practice test and study guide for CLEP English Literature
- [Financial Accounting](https://www.powerhouseprep.com/clep/financial-accounting/): Practice test and study guide for CLEP Financial Accounting
- [History of the United States I](https://www.powerhouseprep.com/clep/history-of-the-united-states-i/): Practice test and study guide for CLEP History of the United States I
- [History of the United States II](https://www.powerhouseprep.com/clep/history-of-the-united-states-ii/): Practice test and study guide for CLEP History of the United States II
- [Human Growth and Development](https://www.powerhouseprep.com/clep/human-growth-and-development/): Practice test and study guide for CLEP Human Growth and Development
- [Humanities](https://www.powerhouseprep.com/clep/humanities/): Practice test and study guide for CLEP Humanities
- [Information Systems](https://www.powerhouseprep.com/clep/information-systems/): Practice test and study guide for CLEP Information Systems
- [Introductory Business Law](https://www.powerhouseprep.com/clep/introductory-business-law/): Practice test and study guide for CLEP Introductory Business Law
- [Introductory Psychology](https://www.powerhouseprep.com/clep/introductory-psychology/): Practice test and study guide for CLEP Introductory Psychology
- [Introductory Sociology](https://www.powerhouseprep.com/clep/introductory-sociology/): Practice test and study guide for CLEP Introductory Sociology
- [Natural Sciences](https://www.powerhouseprep.com/clep/natural-sciences/): Practice test and study guide for CLEP Natural Sciences
- [Principles of Macroeconomics](https://www.powerhouseprep.com/clep/principles-of-macroeconomics/): Practice test and study guide for CLEP Principles of Macroeconomics
- [Principles of Management](https://www.powerhouseprep.com/clep/principles-of-management/): Practice test and study guide for CLEP Principles of Management
- [Principles of Marketing](https://www.powerhouseprep.com/clep/principles-of-marketing/): Practice test and study guide for CLEP Principles of Marketing
- [Principles of Microeconomics](https://www.powerhouseprep.com/clep/principles-of-microeconomics/): Practice test and study guide for CLEP Principles of Microeconomics
- [Spanish Language](https://www.powerhouseprep.com/clep/spanish-language-1-2/): Practice test and study guide for CLEP Spanish Language (Levels 1 and 2)
- [Western Civilization I](https://www.powerhouseprep.com/clep/western-civilization-i/): Practice test and study guide for CLEP Western Civilization I

## DSST exams

- [A History of the Vietnam War](https://www.powerhouseprep.com/dsst/a-history-of-the-vietnam-war/): Practice test and study guide for DSST A History of the Vietnam War
- [Business Ethics and Society](https://www.powerhouseprep.com/dsst/business-ethics-and-society/): Practice test and study guide for DSST Business Ethics and Society
- [Computing and Information Technology](https://www.powerhouseprep.com/dsst/computing-and-information-technology/): Practice test and study guide for DSST Computing and Information Technology
- [Criminal Justice](https://www.powerhouseprep.com/dsst/criminal-justice/): Practice test and study guide for DSST Criminal Justice
- [Ethics in America](https://www.powerhouseprep.com/dsst/ethics-in-america/): Practice test and study guide for DSST Ethics in America
- [History of the Soviet Union](https://www.powerhouseprep.com/dsst/history-of-the-soviet-union/): Practice test and study guide for DSST History of the Soviet Union
- [Human Resource Management](https://www.powerhouseprep.com/dsst/human-resource-management/): Practice test and study guide for DSST Human Resource Management
- [Introduction to Business](https://www.powerhouseprep.com/dsst/introduction-to-business/): Practice test and study guide for DSST Introduction to Business
- [Introduction to World Religions](https://www.powerhouseprep.com/dsst/introduction-to-world-religions/): Practice test and study guide for DSST Introduction to World Religions
- [Money and Banking](https://www.powerhouseprep.com/dsst/money-and-banking/): Practice test and study guide for DSST Money and Banking
- [Organizational Behavior](https://www.powerhouseprep.com/dsst/organizational-behavior/): Practice test and study guide for DSST Organizational Behavior
- [Personal Finance](https://www.powerhouseprep.com/dsst/personal-finance/): Practice test and study guide for DSST Personal Finance
- [Principles of Public Speaking](https://www.powerhouseprep.com/dsst/principles-of-public-speaking/): Practice test and study guide for DSST Principles of Public Speaking
- [Principles of Statistics](https://www.powerhouseprep.com/dsst/principles-of-statistics/): Practice test and study guide for DSST Principles of Statistics
- [Principles of Supervision](https://www.powerhouseprep.com/dsst/principles-of-supervision/): Practice test and study guide for DSST Principles of Supervision
- [Substance Abuse](https://www.powerhouseprep.com/dsst/substance-abuse/): Practice test and study guide for DSST Substance Abuse

## AP exams

- [AP United States History](https://www.powerhouseprep.com/ap/ap-united-states-history/): Practice test and study guide for AP United States History

## Other exams

- [GED](https://www.powerhouseprep.com/other/ged/): Study resources for the GED

## Optional

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