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Cathy Kostecki currently serves as the Assistant Superintendent for Human Resources & Instruction at NSSEO since July 2004, focusing on human resources organization, personnel policy implementation, staff selection, and support for curriculum and instruction. Prior to this role, Kostecki was the Assistant Principal at Walden Elementary School in Deerfield District 109, where responsibilities included evaluating staff, coordinating special education programs, and developing educational budgets. Kostecki's experience also includes working as a Special Services Coordinator at Northern Suburban Special Education District and as an Adjunct Instructor at the College of DuPage. Early career roles included serving as a Special Education Teacher and Psychoeducational Diagnostician within Schaumburg School District 54. Kostecki holds a Director of Special Education degree from Illinois State University, a Master’s in Educational Administration from Northern Illinois University, and a Bachelor's in Education from Illinois State University, with a focus on Special Education.