A 76-year-old Northwest Washington woman was killed yesterday when she was stuck in the intersection of Vermont Avenue and H Street NW by a chartered bus carrying junior high school students from Ohio, D.C. police reported.

The incident occurred about 11:15 a.m. as the woman was crossing to the north side of the intersection and the bus was making a left turn from Vermont Avenue into H Street, police said.

The passengers in the bus, from South Euclid, Ohio, had made a tour of the White House shortly before the accident and were on their way to a cafeteria for lunch at the time.

Police said the woman, whose identity was not released pending notification of relatives, was killed instantly. Paul Brimple, 79, of 3130 Wisconsin Avenue, also was struck by the bus, and was treated at George Washington University Hospital and released, police said.

In a second incident, the body of a Potomac man was found yesterday morning near his automobile which was resting against a tree near the southbound lanes of the George Washington Parkway south of rte. 123, U.S. Park Police reported.

The man was identified as Steven Albert Calaway, of 10801 Tulip La. Police said he was lying face down about 25 feet from the car, which was about 100 feet west of the parkway.

The discovery of the body, which was reported to police about 7:35 a.m., disrupted morning commuter traffic on the parkway. A backup reportedly extended for miles.

In a third fatality, a 6-year-old Washington boy was struck by a car and fatally injured Wednesday night on the H Street NE overpass over the Metro subway tracks, D.C. police reported.

The victim, identified as Eric Scott, of 915 Third St. NE, was struck about 6:30 p.m. by a westbound car as he ran across H Street on the overpass, police said.

They said the boy, the son of Barbara Scott, died of a skull fracture at 9:40 p.m. at Childrens Hospital.