A 17-year-old high school student has pleaded guilty to charges he altered a school district web site to protest a school tax referendum. Aaron Kennedy made changes to about six pages of the Rockford, Ill., School District web site, including one where he told users to vote against the referendum.

School officials and Rockford police were led to Kennedy by tracing through online channels, said Winnebago County Assistant State’s Attorney James Brun.

Kennedy was charged, arraigned, and sentenced in an April hearing before the Winnebago County Court. He pleaded guilty to misdemeanor computer tampering and was ordered to pay a $1,000 fine and serve 120 hours of community service. Incidentally, the proposed three-year referendum failed by a 2-1 margin.