20th century After the end of
World War II, the
Ford Foundation created a fund that supported committees studying education. The program, which was then referred to as the "Kenyon Plan", was founded and pioneered at
Kenyon College in
Gambier, Ohio, by the then-college president
Gordon Chalmers. The first study was conducted by four prep schools,
Lawrenceville School,
Phillips Academy,
Phillips Exeter Academy, and
St. Paul's School, and three universities,
Harvard University,
Princeton University, and
Yale University. In 1952, they issued the report
General Education in School and College: A Committee Report which recommended allowing high school seniors to study college-level material and to take achievement exams that allowed them to attain college credit for this work. The second committee, the Committee on Admission with Advanced Standing, developed and implemented the plan to choose a curriculum. A pilot program was run in 1952 which covered eleven disciplines. In the 1955–56 school year, it was nationally implemented in ten subjects: Mathematics, Physics, Chemistry, Biology, English, History, French, German, Spanish, and Latin. The
College Board, a not-for-profit organization based in New York City, has run the AP program since 1955. It develops and maintains guidelines for the teaching of higher-level courses in various subject areas. In addition, it supports teachers of AP courses and supports universities. These activities are funded through fees required to take the AP exams.
Early 21st century The number of AP exams administered each year saw a steady increase in the
21st century. In 2003, 175,860 English Language and Composition exams were administered. By 2013, this number had risen to 476,277, or an increase of 171%. Such an increase has occurred in nearly all AP exams offered, with the AP Psychology exam seeing a 281% increase over the past decade. In 2022, the most taken AP exam was
English Language and Composition with 520,771 students and the least taken AP exam was
Italian Language and Culture with 2,194 students. In 2006, over one million students took over two million Advanced Placement examinations. Many high schools in the United States offer AP courses, though the College Board allows any student to take any examination regardless of participation in its respective course. Therefore,
home-schooled students and students from schools that do not offer AP courses have an equal opportunity to take AP exams. In 2007, hedge fund manager and philanthropist
Whitney Tilson helped create a $1 million program (called Reach, for Rewarding Achievement) funded by philanthropists to pay students in 25 public schools and six Roman Catholic private schools in New York City who do well on Advanced Placement exams. High school students receiving a top score of five on one of the exams earned $1,000 (a four was worth $750, and a three was worth $500). On April 3, 2008, the College Board announced that four AP courses—French Literature, Latin Literature, Computer Science AB, and Italian Language and Culture—would be discontinued after the 2008–2009 school year due to lack of funding. However, the Italian Language and Culture test was again offered beginning in 2011.
Recent developments Between 2016 and 2019, the College Board focused on restructuring exam formats to emphasize critical analysis and scenario-based questions. Many exams, such as
AP World History and
AP U.S. Government and Politics, saw reductions in the number of
multiple-choice questions—frequently changing from five answer choices down to four—alongside adjusted time limits and new essay formats.
AP Biology saw a significant removal of introductory course material in
botany, basic
zoology, and
comparative anatomy and physiology. The 2020 exam year faced unprecedented disruptions due to the
COVID-19 pandemic, and exams this year were taken online at home, shorted to 45 minutes, tested only the first 75% of course material, and permitted students to freely consult their notes and books.
A class action lawsuit was brought against College Board following various legal, technical, and accessibility issues with this exam. Following this year, standard testing resumed, but the College Board continued to refine exam structures across numerous subjects, including
AP Human Geography,
AP Computer Science, and
AP Latin. These updates largely continued the trend of standardizing multiple-choice sections to four options and adjusting the time allotted for free-response questions. This period also saw the introduction of the new courses
AP Precalculus and
AP African American Studies, which held their first testing terms in May 2024 in May 2025, respectively. As of the 2024 testing season, exams cost $98 each, though the cost may be subsidized by local or state programs. Financial aid is available for students who qualify for it; the exam reduction is $36 per exam from College Board plus an additional $9 rebate per fee-reduced exam from the school. There may be further reductions depending on the state. In May 2025, twenty-eight AP exams moved to a fully digital format, primarily in the humanities and computer science, while math and science exams adopted a hybrid model where students view prompts digitally but write their free-response answers on paper. Concurrently, several major courses underwent deep structural revisions: the four
AP Physics courses all adopted a new shared format,
AP Psychology was reorganized into five large units, and
AP Statistics removed several topics alongside the second-year algebra prerequisite. ==Courses==