Class Reunion (Sat.(31), 9-11 P.M., NBC) Taped in Portland, Ore., by Bunim-Murray Prods. Executive producers and creators, Mary-Ellis Bunim, Jonathan Murray; producer, Matt Kunitz; directors-editors, Donald Bull, Glenn Morgan; research director, Libby Pace; vidcamera director, Biff Bracht; audio mix supervisor, Jeffsan Toro; music, Mark Mothersbaugh. Docu about a group of attractive graduates who participated in their 10th reunion at Portland’s Parkrose High School gets for being well-intentioned, as it cunningly delves into the past and present of this crowd in their late 20s. Directors-editors Donald Bull and Glenn Morgan shrewdly spotlight those who’d be drawing-card TV personalities, letting them address the camera; all participants in the offbeat TV venture should draw attention. The students, assembled for four days, are split between two houses. In House 1 are dropout Amy; Chris K.; jock Joe; ex-party girl Anneen; onetime class clown Heidi; blue-collar Chris C; and Robin and Dan, who are married. Across the street in House 2 are friends Julie and Dawn, blooming Marne, her pal Marilyn, supposed outsider Mike, self-confident football player Kent and his fellow sports-lover Scott. Mike, foreign-looking and uninterested in sports, knows Scott disliked him in school. Mike’s college graduation calls him away this Saturday, but he returns for the reunion dinner.Marilyn felt like she was an outsider when she was in school, but not nearly as much as did her friend Marne, who had hip difficulties, was fat and unattractive, and knew it. Time and attention have given her a chance at revenge. She’s physically well, has lived in Europe, and has been modeling. A couple of the impressed grads don’t even remember early Marne which is why she came to the reunion. Amy’s schooldays were unhappy. There had been rumors about her promiscuity, and she had transferred to another school. She tells several gathered grads in House 1 about the accusations, about how they’d hurt, and why she’s at the reunion. It’s moments like this that shine. Dan had wanted to marry Robin since way back when, but she had a mind of her own. Chris K., who had been close to Robin, was Dan’s best friend, but Dan chose to be with Robin, and Chris got jealous and wrote Dan a bitter note. Dan showed it to Robin. She resented Chris, and still does. Some others have bloomed, others have continued in a predictable line, still others have settled for less. Echoes of yesteryear’s romances pop up. Julie and Kent went together for years, but she’s married to someone else and he’s engaged. Their games often sound bitter. The reunion dinner itself plays out without many surprises. Someone hires a transvestite to try to get tough Joe to dance, but he gets sore. The stress factors hang around, but underneath lie all sorts of emotions novelists and screenwriters and storytellers have been trading on since Homer was a pup. Videotape work looks good, and the program looks technically clean. Sound is superior, and abrupt editing hands the vidpic a good pace. The reunion dinner and Sunday’s collection of goodbyes reek of tradition and posing. But, in some stretches, “Class Reunion” probes at old wounds and has the grace to look away. The producers, director-editors, camera crews and ex-students all are telling universal stories. Is it inconclusive? Of course. It’s patterned on life. After all, Emma Bovary was and is real somewhere.