Ari Meyers, late for her interview, called from the Yale University library and apologized profusely: "I'm sorry," she murmured in a soft, breathy voice. "I'm sorry. I'm sorry."

No matter. This is simply a young woman whose life is so full it's overflowing.

In September, Ari Meyers enrolled at Yale. But also in September, she was already well into the shooting schedule for "Kate & Allie," the CBS sitcom she's appeared on since its debut in March 1984 as a midseason replacement series.

But that's not all. On Sunday and Tuesday this week she appears in a CBS miniseries as well, "Sidney Sheldon's Windmills of the Gods," with Jaclyn Smith and Robert Wagner. Meyers plays Beth, the teen-age daughter of Smith's character, Mary Ashley, who is uprooted when her mother is appointed American ambassador to Romania.

In real life, the challenge for Meyers is juggling both her lives, as a student and as an actress. Unlike former Yalies Jodie Foster and Jennifer Beals and recent Princeton graduate Brooke Shields, Meyers is still appearing on a continuing television series.

"It's working," she insisted. "We film in New York." Meyers takes the train into the city "every other week -- it's not really a set schedule. Tuesdays and Thursdays first semester I only had one class."

Her co-star, Allison Smith, is also a college freshman, attending New York University. They play the daughters of Kate McArdle (Susan Saint James) and Allie Lowell (Jane Curtin), single mothers and long-time friends who share a Greenwich village brownstone.

This year, when Meyers went to Yale, her character, Emma McArdle, went to live in a college dorm. Smith's character, Jenny Lowell, had to stay home with little brother Chip (Frederick Koehler).

Meyers, who is 18, enrolled in archaeology, English, French and psychology the first semester. The university also provided her with three roommates who aren't impressed with her celebrity and keep her on an even keel, she said.

"Yale -- it's great, it's wonderful," said Meyers. "I visited twice, and I loved it ... the whole system: the courses, the housing, the people. Also, it was close to New York so I could commute."

Meyers is strong for New York, having started working there at age 6, she said, when the Ford Modeling Agency started a children's division. "They came to my school because they needed people, and from there I did commercials and modeling and when I was 12, 'Author! Author!' {a 1982 film with Al Pacino and Dyan Cannon}. I did a lot of different TV movies and things like that."

All her TV movies, like the series, have been on CBS. In 1985 she made two, "Kids Don't Tell," about child molestation, and "Picking Up the Pieces," about an abused wife's quest for self-esteem. The previous year she was cast in "License to Kill," the story of the family of a high school girl killed by a drunk driver, and in 1983 in "Running Out," about a woman who comes back to the husband and daughter she abandoned earlier.

"My mom {Taro Meyers} is an actress and she sings and writes, but I never thought of it as a show-biz family. My mom, she was a great support, taking care of so many things, like coordinating in high school so I could work. She helped, but it was never anything that was pushed."

But, back to Yale: "I'm not at all fluent in French, but I will be soon -- I'm determined. I'd like to go to Europe to study ... But everything's great." And how's life at "Kate & Allie"? "Oh, I love it. I just love the people there."