A Christian boarding school files a discrimination lawsuit against a southern Oregon town. The suit claims that Canyonville charges tax-exempt organizations such as public schools and churches a premium for water and sewer service. The school claims the city charges twice the going rate for water and adds a surcharge for sewer service.  Officials at Canyonville Christian academy say the overcharges amount to about $200,000 since 1988, which is as far back as its records go. City officials say they can't discuss the litigation.