The purpose of this study was to examine the principals' perceptions of social networking access and its relationship to cyberbullying, the importance of student achievement, and the school environment across the United States. This research provides some evidence on how principals perceive and understand the threat of cyberbullying and its subsequent negative effects that take place in the school environment. The theoretical framework used for this study was the attribution theory. A sample of 3,484 public school principals was used in the School Survey on Crime and Safety: Principal Questionnaire 2009-10 School Year. The researcher found that limited access to social networking sites increased incidents of cyberbullying in the school environment. [The dissertation citations contained here are published with the permission of ProQuest LLC. Further reproduction is prohibited without permission. Copies of dissertations may be obtained by Telephone (800) 1-800-521-0600. Web page: http://www.proquest.com.bibliotheek.ehb.be/en-US/products/dissertations/individuals.shtml.]