D.C. school board member Nathaniel (Nate) Bush announced yesterday that he will seek reelection this fall to a second term as Ward 7's representative on the board.

Bush, an attorney in private practice, was first elected to his first term in 1979.

"I'm running basically as a result of the success we have had in the implementation of programs that have had a positive impact on the achievement level of students in Ward 7," Bush said in an interview.

He said he wants to complete a program using his own office funds and private sources to provide computers for elementary schools in his ward. Computers are not scheduled to be introduced to elementary schools on a systemwide basis until 1985, Bush said. "We'll have a head start."

Bush said he is canvassing each school in his ward to determine particular problems they experience, adding: "We have had a great deal of success in the elementary schools. Now we have to do something about the senior and junior high schools. We have to require students to have better performance records."

Bush made his reelection announcement last night at the River Terrace Elementary School, 34th Street and Benning Road NE.

The nonpartisan election is scheduled for Nov. 8.

Bush, a former attorney for the federal Bureau of Alcohol, Tobacco and Firearms, is a native of Washington and a graduate of Eastern High School in his ward.

He has served as a volunteer legal counsel and served as an officer of several civic associations and has been active in parent-teacher organizations.