A GAS LEAK FORCED A PRECAUTIONARY EVACUATION AT LAFAYETTE HIGH SCHOOL FRIDAY.  IT WAS CREDITED TO A FAULTY VALVE IN THE CHEMISTRY LAB.   AT FIRST, THE SCIENCE HALL WAS EVACUATED… THEN THE GAS REACHED THE VENTILATION SYSTEM… AND THE ENTIRE SCHOOL WAS EVACUATED.  AFTER THE PROBLEM WAS FIXED AND THE "ALL CLEAR" SOUNDED… STUDENTS WERE ALLOWED BACK TO THEIR CLASSROOMS.  

WQCH