In a curious claim of violation of intellectual property rights, students at a McLean Virginia high school say that their essays are submitted to a company, Turnitin, to compare against a 22 million document database for plagiarism. The essays are then added to the company's database to compare to new essays, giving rise to the claim of violation (
Washington post - link here).
It looks as if the students will lose, as the school with the protesting students is requiring them to surrender their claim in order to receive a grade.
Some legal minds are quoted as supporting this student view. That suggests how far claims of property can be stretched.