The Chantilly Chapter, which meets at The International Country Club, offers classes for the following grades:
- 6th Grade and 7th Grade: Junior Cotillion classes meeting once a month for five months with a Winter Dance and Spring Ball.
- 8th Grade: Year Three Program: Three of five events are combined with other students in Fairfax and Arlington County. Two classes are held at International Country Club.
- 9th-12th Grade: High School Cotillion: Six events held at various locations in Northern Virginia and D.C.