(AGI) Palermo, Sept 15 - Thousands of teachers and school staffhave a right to an open-ended contract, but have to prove theirworth, said Italian Premier Matteo Renzi. "A total of 149,000staff are entitled to a contract. We're not saying that we willjust hire them, but we have an opportunity to change the schoolsystem. These people have to make an effort, they have to do agood job, showing their students that they have been chosen onmerit," he told an audience at the beginning of the educationalyear at a school in Sicily. . .