This memorandum provides information pertinent to the participation and performance of Advanced Placement (AP) and International Baccalaureate (IB) examinations for 2021 graduates in Montgomery County Public Schools (MCPS). In 2021, 66.6 percent of MCPS graduates took one or more AP exams, a rate that was 23.0 and 31.7 percentage points higher than the rate for public school graduates in Maryland (43.6 percent) and the nation (34.9 percent), respectively. Districtwide, 53.2 percent of the 2021 MCPS graduates earned at least one AP exam score of 3 or higher, while 66.6 percent of the public school graduates in the state of Maryland and 22.5 percent of the national graduates in public schools attained an AP score of 3 or higher. [For "Class of 2020 Advanced Placement and International Baccalaureate Exam Participation and Performance. Memorandum," see ED617824.]