Khan Academy launched a new AP Precalculus course and updated its AP Calculus AB curriculum to align with official College Board standards. These free resources help high school students fix learning gaps and write the precise explanations required on advanced placement exams. Because the materials match the official pacing guides, teachers and families can find targeted study materials without extra prep work.
What Happened
The new AP Precalculus course and revised AP Calculus AB course match the College Board's official Course and Exam Description (CED) unit by unit. Teachers can assign exercises and videos directly without mapping different curricula.
The AP Precalculus course has 14 videos and five articles that cover functional behaviors and mathematical language. It also includes Algebra 2 review to help students catch up before they fall behind. For AP Calculus AB, the update adds free-response support, such as sample prompts, student answers, and grading notes.
The Bigger Picture
Enrollment in advanced high school math is rising rapidly. The College Board introduced AP Precalculus during the 2023–2024 academic year to prepare students for college math and provide a clear path to earn college credit. According to Texas CBE, registration for the AP Precalculus exam jumped from roughly 80,000 students in May 2024 to more than 130,000 in May 2025, a 62% increase.
The transition to college-level math is difficult. Experts note that moving from Algebra 2 to precalculus is often a steeper hurdle than the transition from Algebra 1 to Algebra 2. Some educators recommend rigorous summer preparation to memorize formulas. Others point out that students need a deep conceptual understanding to connect mathematical ideas. Without these prerequisites, students struggle when they face advanced graphing and trigonometry.
What This Means for Families
These resources help families with homework and exam preparation. A simple answer key rarely helps when a student gets stuck on a complex math problem. Khan Academy's precalculus platform provides multi-step hints that explain the reasoning behind each step, like how domain restrictions change a function. This helps students work independently without needing constant help from a parent or teacher.
The updates also address the written requirements of AP exams. On the AP Calculus AB exam, students often lose points because they fail to properly communicate their mathematical arguments. Calculating the correct answer is only the first step. Students must also write out their justifications with precise notation. By using official grading rubrics in daily practice, students learn to critique their own work.
What You Can Do
To get started, use the Algebra 2 diagnostic review articles in the AP Precalculus course to find and fix math weaknesses before the class moves forward. Students preparing for the AP Calculus AB exam should review the sample free-response questions and scoring guides to see how graders award points for written work. Parents and teachers can also match daily practice with current school lessons by searching for specific videos and exercises on the platform, saving time on lesson planning.