About 360 eighth graders have been accepted to Northern Virginia's first high school of science and technology, and two-thirds of them are boys, Fairfax County school officials said yesterday.

The new school will open next fall in Annandale at the existing Jefferson High School.

The freshmen, who come from Fairfax, Prince William and Loudoun counties, Manassas City, Manassas Park and Falls Church, were selected from 1,175 applicants on the basis of aptitude tests, grade-point averages, written essays and recommendations. An additional 40 freshmen will be added later this summer from a waiting list of 66, and from students who have moved to Northern Virginia since the official application deadline last December.

Louis R. (Ray) Volrath, principal of the new school, said 69 percent of the students are boys and 31 percent are girls. He said he did not know why more boys applied to the school, or why they scored at the top of the list. The school, he said, would make a "special effort" in coming years to attract girls.

In addition to the freshmen, who were notified by letter of their acceptance March 22, the new high school will also have a special program for seniors.

The school will have 159 seniors, 14 of them from outside the county, Volrath said. They were selected from 206 applicants, he said.

The school, one of four such state-designated magnet schools in Virginia, is also drawing up its course offerings and selecting teachers. Thirty-nine teachers will be needed and most will come from Fairfax, Volrath said.

By next fall, the school will have undergone $503,000 worth of county-funded renovations. The state is providing $300,000 in start-up costs, Volrath said, and corporations have given more than $1 million for computers and laboratories.