School security is near the top of the "to-do" list for DeKalb County School Superintendent Cheryl L.H. Atkinson, who is still in her first 90-day review of the entire school system. She told the DeKalb Board of Education Monday that is initiating a review across all of the district's 137 schools for problems involving discipline, including incidents that required involvement of the school police. "I want to look at where we are deploying resources," she said. "Down to the time of day. I want us to look at everything." No timetable was announced.