EDMOND — The 2010-11 school year will bring several changes for students and teachers in Edmond Public Schools. Elementary students will get a taste of the changes on the first day of school. District officials plan to expand a pilot program started at Cross Timbers Elementary to all elementary schools this year. Last year, the Cross Timbers community was the site for a pilot food program that aims to serve healthier meals and increase the number of breakfast and lunch participants. The program was hailed as a success by school officials. Associate Superintendent Bret Towne said the number of adults eating at the school has risen by 256 percent. Student participation has increased by 15 percent. Towne credited the increased participation to the fresher food, which is prepared on site instead of being a reheated, prepackaged meal. District officials also plan to continue their efforts to keep up with the district’s growth. In the 2009-10 school year, the district added 476 students, pushing total enrollment to 20,784. To stay ahead, school officials plan to expand eight schools. Among those are Centennial, Clegern, Cross Timbers, Ida Freeman, West Field and Will Rogers elementary schools. Randy Decker, the district’s director of personnel, said most of the growth is on the district’s west and north sides. The growth came in a year that projections had shown enrollment would begin to taper off. In 2007, the district hired a consulting firm to figure how much the district would grow during the next 10 years so the district could better prepare. The projections indicated the district would grow by about 350 students in the 2009-10 school year. As a result of the larger-than-expected increase, officials have had to step up plans to add new schools, Towne said. Now the district is looking at adding a new elementary school within the next three to four years and a middle school within the next five to six years. Both of those schools would be built on the district’s west side, Towne said. Should the rate of growth continue, Towne said the district would begin looking at adding a fourth high school, on the district’s east side, in about 10 years.