Among "All Schools," view the twenty boarding schools with the "most AP/advanced courses offered." First, some important notes:
- For several reasons (listed below), these comparisons are intended only as informal reference points for evaluating the amount of advanced courses available at each school.
- Schools may prefer to offer their own high level classes in place of the AP curriculum (i.e., schools may find that some subjects are better taught with their own curriculum. Read more about why some prep schools choose not to offer AP classes). These advanced courses are counted the same as an AP designated course.
- Availability of AP or advanced courses may change depending on student interest in given year - alternatively, many schools allow students to prepare for an AP without offering the course through self-designed independent study.
- As a result, small statistical differences between schools are generally not meaningful in determining whether a school offers more opportunities for advanced study.
| Sorted by range (alphabetically within range) | * Indicates Boarding Grades Offered | ||
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| 1.-20. The Brook Hill School | Co-Ed | 8-12 | >25 |
| 1.-20. Choate Rosemary Hall | Co-Ed | 9-12, PG | >25 |
| 1.-20. Concord Academy | Co-Ed | 9-12 | >25 |
| 1.-20. Episcopal High School | Co-Ed | 9-12 | >25 |
| 1.-20. Groton School | Co-Ed | 8-12 | >25 |
| 1.-20. Kent School | Co-Ed | 9-12, PG | >25 |
| 1.-20. Lake Forest Academy | Co-Ed | 9-12, PG | >25 |
| 1.-20. The Loomis Chaffee School | Co-Ed | 9-12, PG | >25 |
| 1.-20. Mercersburg Academy | Co-Ed | 9-12, PG | >25 |
| 1.-20. Northfield Mount Hermon School | Co-Ed | 9-12, PG | >25 |
| 1.-20. Perkiomen School | Co-Ed | 7-12, PG | >25 |
| 1.-20. Phillips Academy Andover | Co-Ed | 9-12, PG | >25 |
| 1.-20. Pomfret School | Co-Ed | 9-12, PG | >25 |
| 1.-20. St. Andrew's School, DE | Co-Ed | 9-12 | >25 |
| 1.-20. St. Andrew's-Sewanee School | Co-Ed | 9-12 | >25 |
| 1.-20. The Taft School | Co-Ed | 9-12, PG | >25 |
| 1.-20. The Webb School | Co-Ed | 7-12, PG | >25 |
| 1.-20. Wentworth Military Academy & College | Co-Ed | 9-12, PG | >25 |
| 1.-20. Westtown School | Co-Ed | 9-12 | >25 |
| 1.-20. Wyoming Seminary Upper School | Co-Ed | 9-12, PG | >25 |
| Sorted by range (alphabetically within range) | * Indicates Boarding Grades Offered | ||
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| 21.-36. Baylor School | Co-Ed | 9-12 | 22-24 |
| 21.-36. Darlington School | Co-Ed | 9-12, PG | 22-24 |
| 21.-36. Flintridge Sacred Heart Academy | All-Girls | 9-12 | 22-24 |
| 21.-36. Georgetown Preparatory School | All-Boys | 9-12 | 22-24 |
| 21.-36. Hill School | Co-Ed | 9-12, PG | 22-24 |
| 21.-36. Indian Springs School | Co-Ed | 9-12 | 22-24 |
| 21.-36. Lawrenceville School | Co-Ed | 9-12, PG | 22-24 |
| 21.-36. McCallie School | All-Boys | 9-12 | 22-24 |
| 21.-36. Middlesex School | Co-Ed | 9-12 | 22-24 |
| 21.-36. North Broward Preparatory School | Co-Ed | 7-12 | 22-24 |
| 21.-36. Saint Andrew's School | Co-Ed | 9-12 | 22-24 |
| 21.-36. St. George's School | Co-Ed | 9-12 | 22-24 |
| 21.-36. St. Mark's School | Co-Ed | 9-12 | 22-24 |
| 21.-36. St. Michaels University School | Co-Ed | 8-12 | 22-24 |
| 21.-36. Stevenson School | Co-Ed | 9-12 | 22-24 |
| 21.-36. Westminster School | Co-Ed | 9-12, PG | 22-24 |
| 37.-50. Blair Academy | Co-Ed | 9-12, PG | 20-22 |
| 37.-50. The Bolles School | Co-Ed | 7-12, PG | 20-22 |
| 37.-50. Canterbury School | Co-Ed | 9-12, PG | 20-22 |
| 37.-50. Cotter Schools | Co-Ed | 9-12, PG | 20-22 |
| 37.-50. Culver Academies | Co-Ed | 9-12 | 20-22 |
| 37.-50. Foxcroft Academy | Co-Ed | 9-12, PG | 20-22 |
| 37.-50. The Hockaday School | All-Girls | 8-12 | 20-22 |
| 37.-50. The Hotchkiss School | Co-Ed | 9-12, PG | 20-22 |
| 37.-50. Miss Porter's School | All-Girls | 9-12 | 20-22 |
| 37.-50. St. Johnsbury Academy | Co-Ed | 9-12, PG | 20-22 |
| 37.-50. Tabor Academy | Co-Ed | 9-12 | 20-22 |
| 37.-50. TASIS The American School in England | Co-Ed | 9-12, PG | 20-22 |
| 37.-50. Woodberry Forest School | All-Boys | 9-12 | 20-22 |
| 37.-50. Woodside Priory School (The Priory) | Co-Ed | 9-12 | 20-22 |
| 51.-68. Berkshire School | Co-Ed | 9-12, PG | 18-20 |
| 51.-68. The Bishop Strachan School | All-Girls | 7-12 | 18-20 |
| 51.-68. Brentwood College School | Co-Ed | 9-12, PG | 18-20 |
| 51.-68. Brooks School | Co-Ed | 9-12 | 18-20 |
| 51.-68. Cate School | Co-Ed | 9-12 | 18-20 |
| 51.-68. Deerfield Academy | Co-Ed | 9-12, PG | 18-20 |
| 51.-68. The Ethel Walker School | All-Girls | 9-12 | 18-20 |
| 51.-68. Fork Union Military Academy | All-Boys | 6-12, PG | 18-20 |
| 51.-68. Fountain Valley School of Colorado | Co-Ed | 9-12 | 18-20 |
| 51.-68. The Governor's Academy (formerly Governor Dummer Academy) | Co-Ed | 9-12 | 18-20 |
| 51.-68. Montverde Academy | Co-Ed | 7-12, PG | 18-20 |
| 51.-68. The Pennington School | Co-Ed | 7-12 | 18-20 |
| 51.-68. Portsmouth Abbey School | Co-Ed | 9-12 | 18-20 |
| 51.-68. St. Stephen's Episcopal School | Co-Ed | 8-12 | 18-20 |
| 51.-68. Santa Catalina School | All-Girls | 9-12 | 18-20 |
| 51.-68. Western Reserve Academy | Co-Ed | 9-12, PG | 18-20 |
| 51.-68. Wilbraham & Monson Academy | Co-Ed | 9-12, PG | 18-20 |
| 51.-68. The Williston Northampton School | Co-Ed | 9-12, PG | 18-20 |
| 69.-91. Asheville School | Co-Ed | 9-12 | 16-18 |
| 69.-91. Avon Old Farms School | All-Boys | 9-12, PG | 16-18 |
| 69.-91. Camden Military Academy | All-Boys | 7-12, PG | 16-18 |
| 69.-91. Cheshire Academy | Co-Ed | 9-12, PG | 16-18 |
| 69.-91. Christ School | All-Boys | 8-12 | 16-18 |
| 69.-91. Foxcroft School | All-Girls | 9-12 | 16-18 |
| 69.-91. Fryeburg Academy | Co-Ed | 9-12, PG | 16-18 |
| 69.-91. Hawaii Preparatory Academy | Co-Ed | 6-12, PG | 16-18 |
| 69.-91. Kimball Union Academy | Co-Ed | 9-12, PG | 16-18 |
| 69.-91. The Kiski School | All-Boys | 9-12, PG | 16-18 |
| 69.-91. Linden Hall | All-Girls | 6-12, PG | 16-18 |
| 69.-91. The Linsly School | Co-Ed | 7-12 | 16-18 |
| 69.-91. The Madeira School | All-Girls | 9-12 | 16-18 |
| 69.-91. The Masters School | Co-Ed | 9-12 | 16-18 |
| 69.-91. Saint Mary's School | All-Girls | 9-12 | 16-18 |
| 69.-91. Salisbury School | All-Boys | 9-12, PG | 16-18 |
| 69.-91. The Stony Brook School | Co-Ed | 7-12 | 16-18 |
| 69.-91. Suffield Academy | Co-Ed | 9-12, PG | 16-18 |
| 69.-91. The Thacher School | Co-Ed | 9-12 | 16-18 |
| 69.-91. Trinity Pawling School | All-Boys | 9-12, PG | 16-18 |
| 69.-91. Virginia Episcopal School | Co-Ed | 9-12 | 16-18 |
| 69.-91. The Webb Schools | Co-Ed | 9-12 | 16-18 |
| 69.-91. Westover School | All-Girls | 9-12 | 16-18 |
| 92.-113. Buffalo Seminary | All-Girls | 9-12 | 14-16 |
| 92.-113. Cranbrook Schools | Co-Ed | 9-12 | 14-16 |
| 92.-113. Cushing Academy | Co-Ed | 9-12, PG | 14-16 |
| 92.-113. Dana Hall School | All-Girls | 9-12 | 14-16 |
| 92.-113. George School | Co-Ed | 9-12 | 14-16 |
| 92.-113. The Gunnery | Co-Ed | 9-12, PG | 14-16 |
| 92.-113. The King's Academy | Co-Ed | 7-12 | 14-16 |
| 92.-113. Millbrook School | Co-Ed | 9-12, PG | 14-16 |
| 92.-113. Miss Hall's School | All-Girls | 9-12, PG | 14-16 |
| 92.-113. Peddie School | Co-Ed | 9-12, PG | 14-16 |
| 92.-113. Rabun Gap-Nacoochee School | Co-Ed | 7-12 | 14-16 |
| 92.-113. Randolph-Macon Academy | Co-Ed | 6-12, PG | 14-16 |
| 92.-113. St. Anne's-Belfield School | Co-Ed | 9-12 | 14-16 |
| 92.-113. Saint James School | Co-Ed | 8-12 | 14-16 |
| 92.-113. San Marcos Baptist Academy | Co-Ed | 7-12 | 14-16 |
| 92.-113. Shattuck-St. Mary's School | Co-Ed | 6-12, PG | 14-16 |
| 92.-113. Shawnigan Lake School | Co-Ed | 8-12 | 14-16 |
| 92.-113. Thornton Academy | Co-Ed | 9-12 | 14-16 |
| 92.-113. Tilton School | Co-Ed | 9-12, PG | 14-16 |
| 92.-113. TMI -The Episcopal School of Texas | Co-Ed | 8-12 | 14-16 |
| 92.-113. Wasatch Academy | Co-Ed | 9-12, PG | 14-16 |
| 92.-113. Wayland Academy | Co-Ed | 9-12 | 14-16 |
| 114.-139. Admiral Farragut Academy | Co-Ed | 6-12 | 12-14 |
| 114.-139. Army and Navy Academy | All-Boys | 7-12 | 12-14 |
| 114.-139. The Athenian School | Co-Ed | 9-12 | 12-14 |
| 114.-139. Brenau Academy | All-Girls | 9-12, PG | 12-14 |
| 114.-139. Bridgton Academy | All-Boys | 12-12, PG | 12-14 |
| 114.-139. Chatham Hall | All-Girls | 9-12 | 12-14 |
| 114.-139. Dunn School | Co-Ed | 9-12 | 12-14 |
| 114.-139. Emma Willard School | All-Girls | 9-12, PG | 12-14 |
| 114.-139. Family First Academy | Co-Ed | 8-12 | 12-14 |
| 114.-139. Garrison Forest School | All-Girls | 8-12 | 12-14 |
| 114.-139. Grier School | All-Girls | 6-12, PG | 12-14 |
| 114.-139. Hebron Academy | Co-Ed | 9-12, PG | 12-14 |
| 114.-139. Holderness School | Co-Ed | 9-12, PG | 12-14 |
| 114.-139. The Hun School of Princeton | Co-Ed | 9-12, PG | 12-14 |
| 114.-139. Kents Hill School | Co-Ed | 9-12, PG | 12-14 |
| 114.-139. La Lumiere School | Co-Ed | 9-12, PG | 12-14 |
| 114.-139. Miller School | Co-Ed | 8-12, PG | 12-14 |
| 114.-139. Milton Academy | Co-Ed | 9-12 | 12-14 |
| 114.-139. Monte Vista Christian School | Co-Ed | 9-12 | 12-14 |
| 114.-139. New Hampton School | Co-Ed | 9-12, PG | 12-14 |
| 114.-139. Ridley College | Co-Ed | Pre-K-12, PG | 12-14 |
| 114.-139. St. Albans School | All-Boys | 9-12 | 12-14 |
| 114.-139. St. Paul's School | Co-Ed | 9-12 | 12-14 |
| 114.-139. San Domenico School | All-Girls | 9-12 | 12-14 |
| 114.-139. Stanstead College | Co-Ed | 7-12 | 12-14 |
| 114.-139. Vermont Academy | Co-Ed | 9-12, PG | 12-14 |
| 140.-154. Bronte College of Canada | Co-Ed | 9-12, PG | 10-12 |
| 140.-154. Christchurch School | All-Boys | 9-12, PG | 10-12 |
| 140.-154. Eagle Hill School | Co-Ed | 8-12 | 10-12 |
| 140.-154. Florida Air Academy | Co-Ed | 6-12 | 10-12 |
| 140.-154. Hargrave Military Academy | All-Boys | 7-12, PG | 10-12 |
| 140.-154. The MacDuffie School | Co-Ed | 9-12 | 10-12 |
| 140.-154. Missouri Military Academy | All-Boys | 6-12, PG | 10-12 |
| 140.-154. Ojai Valley School | Co-Ed | 3-12 | 10-12 |
| 140.-154. Proctor Academy | Co-Ed | 9-12, PG | 10-12 |
| 140.-154. St. Stanislaus College | All-Boys | 7-12 | 10-12 |
| 140.-154. Salem Academy | All-Girls | 9-12 | 10-12 |
| 140.-154. Solebury School | Co-Ed | 9-12 | 10-12 |
| 140.-154. Stoneleigh-Burnham School | All-Girls | 7-12, PG | 10-12 |
| 140.-154. Subiaco Academy | All-Boys | 8-12 | 10-12 |
| 140.-154. Thomas Jefferson School | Co-Ed | 7-12, PG | 10-12 |
| 155.-194. Andrews Osborne Academy | Co-Ed | 7-12 | 5-10 |
| 155.-194. Besant Hill School (Formerly Happy Valley School) | Co-Ed | 9-12 | 5-10 |
| 155.-194. Blue Ridge School | All-Boys | 9-12 | 5-10 |
| 155.-194. Brewster Academy | Co-Ed | 9-12, PG | 5-10 |
| 155.-194. Carlisle School | Co-Ed | 9-12 | 5-10 |
| 155.-194. CFS, The School at Church Farm | All-Boys | 7-12 | 5-10 |
| 155.-194. Country Day School, Costa Rica | Co-Ed | 8-12 | 5-10 |
| 155.-194. The Delphian School | Co-Ed | 3-12 | 5-10 |
| 155.-194. Dublin School | Co-Ed | 9-12 | 5-10 |
| 155.-194. The Forman School | Co-Ed | 9-12, PG | 5-10 |
| 155.-194. George Stevens Academy | Co-Ed | 9-12 | 5-10 |
| 155.-194. Gould Academy | Co-Ed | 9-12, PG | 5-10 |
| 155.-194. Havergal College | All-Girls | 9-12 | 5-10 |
| 155.-194. Hoosac School | Co-Ed | 8-12, PG | 5-10 |
| 155.-194. Howe Military School & Summer Camp | Co-Ed | 5-12 | 5-10 |
| 155.-194. Hyde-Woodstock | Co-Ed | 9-12, PG | 5-10 |
| 155.-194. The Knox School | Co-Ed | 7-12 | 5-10 |
| 155.-194. Lawrence Academy | Co-Ed | 9-12 | 5-10 |
| 155.-194. Lowell Whiteman School | Co-Ed | 9-12 | 5-10 |
| 155.-194. The Marvelwood School | Co-Ed | 9-12, PG | 5-10 |
| 155.-194. Midland School | Co-Ed | 9-12 | 5-10 |
| 155.-194. Northwood School | Co-Ed | 9-12, PG | 5-10 |
| 155.-194. Oakwood Friends School | Co-Ed | 9-12 | 5-10 |
| 155.-194. Oregon Episcopal School | Co-Ed | 9-12 | 5-10 |
| 155.-194. The Orme School of Arizona | Co-Ed | 8-12, PG | 5-10 |
| 155.-194. Riverside Military Academy | All-Boys | 7-12, PG | 5-10 |
| 155.-194. St. Andrew's College | All-Boys | 6-12 | 5-10 |
| 155.-194. St. John's Northwestern Military Academy | All-Boys | 7-12, PG | 5-10 |
| 155.-194. Saint John's Preparatory School | Co-Ed | 9-12, PG | 5-10 |
| 155.-194. St. Margaret's School | All-Girls | 8-12 | 5-10 |
| 155.-194. South Kent School | All-Boys | 9-12, PG | 5-10 |
| 155.-194. Squaw Valley Academy | Co-Ed | 6-12 | 5-10 |
| 155.-194. The Storm King School | Co-Ed | 8-12 | 5-10 |
| 155.-194. Stuart Hall School | Co-Ed | 8-12 | 5-10 |
| 155.-194. Tallulah Falls School | Co-Ed | 7-12 | 5-10 |
| 155.-194. Valley Forge Military Academy | All-Boys | 7-12, PG | 5-10 |
| 155.-194. Villanova Preparatory School | Co-Ed | 9-12 | 5-10 |
| 155.-194. Washington Academy | Co-Ed | 9-12, PG | 5-10 |
| 155.-194. West Nottingham Academy | Co-Ed | 9-12, PG | 5-10 |
| 155.-194. The Winchendon School | Co-Ed | 9-12, PG | 5-10 |
| 195.-209. Academy of the Holy Family | All-Girls | 9-12, PG | <5 |
| 195.-209. The Cambridge School of Weston | Co-Ed | 9-12, PG | <5 |
| 195.-209. Chapel Hill-Chauncy Hall | Co-Ed | 9-12, PG | <5 |
| 195.-209. Colorado Rocky Mountain School | Co-Ed | 9-12 | <5 |
| 195.-209. Houghton Academy | Co-Ed | 9-12, PG | <5 |
| 195.-209. Hyde-Bath | Co-Ed | 9-12, PG | <5 |
| 195.-209. Interlochen Arts Academy | Co-Ed | 9-12, PG | <5 |
| 195.-209. The Leelanau School | Co-Ed | 9-12 | <5 |
| 195.-209. The Meeting School | Co-Ed | 9-12, PG | <5 |
| 195.-209. New York Military Academy | Co-Ed | 7-12, PG | <5 |
| 195.-209. Oak Hill Academy | Co-Ed | 8-12 | <5 |
| 195.-209. Olney Friends School | Co-Ed | 9-12 | <5 |
| 195.-209. St. Andrew's School - RI | Co-Ed | 9-12 | <5 |
| 195.-209. Southwestern Academy | Co-Ed | 7-12, PG | <5 |
| 195.-209. The White Mountain School | Co-Ed | 9-12, PG | <5 |
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