COPENHAGEN (Reuters) - A 17-year-old Danish girl who offered to fight for Islamic State was found guilty on Friday of planning bomb attacks at two schools, one of them Jewish, state broadcaster DR reported. The High Court ruling upholds a ruling in the Holbaek district court in May that found the girl - who was not named - guilty of attempted terrorism. The girl was arrested at her home in January last year, when she was aged 15, and charged with planning the attacks after acquiring chemicals for making bombs.  