Article Photos: Oklahoma City mayor says 12,000 to 13,000 homes damaged or destroyed by May 20 tornado 223/564

Plaza Towers kindergarten teacher Jennifer Simonds, left, gets a hug from parent Melissa Green during a meet and greet with teachers and students from Plaza Towers Elementary at Eastlake Elementary School in Oklahoma City, Thursday, May 23, 2013. Seven Plaza Towers students died when a tornado destroyed the school in Moore, Okla., on Monday. Green's 1st-grade daughter Dalaney Smith, 7, was in Simonds' class last year. Her son, Daemion Smith, 8, is a 2nd-grader at Plaza Towers. Photo by Nate Billings, The Oklahoman