A prestigious Fairfax County high school stands to lose millions of dollars in funding as the Education Department says it will follow through on a threat to withhold funding to the Virginia school system over its gender policy regarding the use of restrooms and locker rooms. The department confirmed to WTOP it’s denying the certification of magnet school grant applications to Fairfax County Public Schools. The denial would result in a cut of about $3.4 million to Thomas Jefferson High School for Science and Technology.