Trailer
 | Pamela Sue Martin as Abby |
 | Betsy Slade as Muffy |
 | Parker Stevenson as Michael |
 | George O'Hanlon, Jr. as Malcolm |
 | Karen Balkin as Laura |
 | Debralee Scott as Ann |
 | Nora Heflin as Emmy |
 | Kathryn Holcomb as Helen |
 | Roderick Cook as Headmaster |
 | Edith Atwater as Mrs. Pendleton |
 | Marijane Maricle as Miss Picard |
 | Meg Wyllie as Nurse |
 | Mary Jackson as Miss Moran |
 | Carol Arthur as Gym Teacher |
 | Hope Summers as Biology Teacher |
 | Jerry Hardin as Mr. Keats |
 | Robert Walden as Frank |
| Luke Andreas as Marge |
 | Darrell Zwerling as Dr. Madden |
 | Lou Frizzell as Dr. Freeman |
 | Michael Gray as Buzzy |
 | Helene Winston as Mrs. H |
| Helen Baron as Mrs. Reed |
 | Cliff Emmich as Hotel Clerk |
| Herbert Nelson as Minister |
| James Brodhead as St. Ambrose Headmaster |
| Christopher Man as David |
| Diana Webster as Mrs. Clairmont |
| Ron Kolman as Jamie Clairmont |
 | Bob Harks as Party Guest (uncredited) |
| Camera | |
| Jules Brenner | Director of Photography |
Art | |
| Charles Pierce | Set Decoration |
Sound | |
| Michel Legrand | Original Music Composer |
Editing | |
| James Mitchell | Editor |
Art | |
| Peter Wooley | Art Direction |
Production | |
| Richard A. Roth | Producer |
Sound | |
| Jerry MacDonald | Music Editor |
Directing | |
| Lynn A. Aber | Script Supervisor |
Sound | |
| Ethmer Roten | Musician |
Directing | |
| Leslie Moulton | Assistant Director Trainee |
Sound | |
| Michel Legrand | Conductor |
Art | |
| John Rozman | Swing |
| John Alvin | Other |
Sound | |
| Kevin F. Cleary | Other |
Directing | |
| Peter Hyams | Director |
Writing | |
| Jane Stanton Hitchcock | Writer |
