CHANDIGARH: Punjab School Education minister Vijay Inder Singla, on Friday, said that as many as 12 government schools of Sangrur, Jalndhar, Ludhiana, Patiala, Hoshiarpur, SBS Nagar, Tarn Taran, Amritsar, SAS Nagar and Fatehgarh Sahib districts have been renamed after freedom fighters and martyrs of the state to give due respect to their valiant spirit.