In a letter to parents on Friday afternoon, Westford Academy principal James Antonelli indicated that no drugs were found on campus during an unannounced "Building on Alert" search earlier that day.
The search, which was conducted by the school in conjuction with the Westford Police K-9 unit and other local law enforcement agencies.
Friday's search took approximately 35 minutes according to Antonelli, with instruction continuing while hallways and parking lots were emptied.
Currently, the search conducts 2 to 3 of these unannounced random searches per year under its current policies.
Despite the results of Friday's search, Antonelli indicated that marijuana and prescription drugs had been found on campus at numerous points during the prior three weeks and urged parents to either lock away or throw away medications that could potentially be abused at home.
He also urged parents in his announcement to be aware of a new drug being found by local police called "Molly," a crystalized form of MDMA, better known as esctasy.