Michael Westover is one of four first-place winners in the 1990 Virginia Mathematics League Contest for seventh-graders. Michael, of Woodbridge Middle School, and three other students achieved a perfect score of 40. Damon Lewis of Lake Ridge Middle School achieved the next highest score, 39. Jason Dewey of Rippon Middle School and Eric Greiling of Lake Ridge scored 38.

The four Prince William high-scoring students are among 11 winners from 24 middle schools across the state.Veterans Elect Officers

Bernard "Mac" McMahon has been elected commander of the Disabled American Veterans Chapter 48, eastern Prince William County. McMahon has been a life member since 1967 and a Chapter 48 member for 12 years. He is a retired Marine. Other officers elected are Bob Bent, senior vice commander; Eloise Lucckese, junior vice commander; Bill Thomas, chaplain; and Bruce Borum, treasurer. George Morgan was appointed adjutant and Paul Majo as legislative officer.June's Top Volunteer

Jane Mitchell has been named volunteer of the month for June by the Prince William Cooperative Extension Service. Mitchell has used her talents as an artist and editor in creating a handbook to accompany the Strong Families: Competent Kids Program. The program, targeted at fourth-graders and their families, reinforces self-esteem, the importance of house rules, handling peer pressure and encouraging parents to evaluate and make good decisions. Mitchell's efforts established the need for a handbook outlining the family workshop component of the program.Soroptomists Honor Barg

Hilda M. Barg has been awarded the 1990 Woman of Distinction Award from Soroptimist International of Woodbridge. Barg, the Woodbridge District supervisor, received the award for her efforts in education and government.

Please send all People column items to Camille Ross, The Washington Post, 13663 Office Place, Suite 104, Woodbridge, Va. 22192.