An imaginative schedule of international cooking classes and a "gourmet gala" at the Swedish Embassy have been organized to benefit Homemaker Health Aide Service. This charity provides care in the home for ill, elderly or disabled adults and dependent children.

The "gourmet gala" comes first. It will be at the Swedish Embassy on Wednesday, Jan 23 from 6:30 to 8:30 p.m. All nine of the chefs who will demonstrate (one of whom is the embassy chef, Pierre Fahlman) will be on hand and provide samples of their creations. A donation of $40, of which $38 is tax deductible, is asked for the gala. No more than 200 reservations will be accepted. Checks should be made out to H.H.A.S.Benefit and mailed to Mrs. Roberts DeGraff, 5604 Kirkside Drive, Chevy Chase, Md. 20015.

The cooking classes will be divided into three separate series, each offering three 2 1/2-hour demonstrations, at L'Academie de Cuisine, 5021 Wilson La., Bethesda. Each series is $75 per person, of which $70 is tax deductible. Tickets to individual demonstrations will be sold for $30 as space allows. Each class is limited to 30 persons.

All classes will be held on Tuesdays. The schedule is as follows:

Series 1: (French) Douglas McNeill of the Four Seasons Hotel, 10 a.m., Feb. 5; (Mexican) Lydia Diaz Jasso of El Rio Grande, 2 p.m., Feb. 12, and (Pennsylvania Dutch) Betty Groff of Groff's Farm Dining Room, 2 p.m., Feb. 19.

Series 2: (Swedish) Pierre Fahlman of the Embassy Of Sweden, 10 a.m., Feb. 12; (Indian) Alison Auger of Apana, 2 p.m., Feb. 26, and (French) Patrick O'Connell of the Inn at Little Washington, Va., 2 p.m, March 5.

Series 3: (Vietnamese) Germaine Swanson of Germaine's, 2 p.m., Feb. 5; (Italian) Andrea Zunino of Da Vinci's Ristorante, 10 a.m., Feb. 19, and (Afghan) M. Shaffi of The Khyber Pass, 10 a.m., Feb. 26.

Menus and printed recipes will be distributed at each demonstration.