"It's totally out of the board of education's hands," she said.
Students remain in the testing pool even if they have been selected previously. Fisher said she doubts any student was retested, however, because of the large number of students in the pool.
The first time students test positive, the school system notifies their parents. Gillispie said she has a meeting with the student and his or her parents to discuss whether the drug use was a one-time mistake or an ongoing problem.
"The first time is basically an intervention," she said.
Students are not punished for their first offense but are suspended from their extracurricular activity for 14 days if their follow-up test comes back positive. Student drivers also are suspended from driving for 14 days after a second positive test.
If students are positive for drugs in their second follow-up test, they are suspended from driving or extracurricular activities for a year.
"Luckily we did not have any second or third offenses," Gillispie said.
Students are never penalized in school for testing positive, no matter how many positive tests they produce.
Officials say testing already has caused a drop in drug use among students.
Each year, West Virginia students in fifth, eighth and 11th grades take the "Pride survey," which measures their alcohol, drug and tobacco use.
Gillispie said drug use consistently drops year-to-year. But the school noticed a significant decrease from the 2010-2011 school year to 2011-2012, the school system's first year with the random drug-testing program.
In the 2010-2011 school year, alcohol use among eighth-graders dropped 2.8 percent, tobacco use dropped 0.2 percent and drug use increased by 1 percent. Alcohol use among 11th-graders dropped 4.8 percent that year, tobacco use dropped 3.3 percent and drug use dropped 3.6 percent.
One year later, eighth-graders reported a 1.6 decrease in tobacco use last school year, a 6.5 percent drop in alcohol use and a 5 percent drop in drug use. Eleventh-graders reported a 3.8 percent drop in tobacco use, an 8.8 percent drop in alcohol use and a 9.4 decrease in drug use.
"I believe we've given kids an opportunity to say 'no,' " Fisher said.