An Ohio high school that canceled its graduation ceremony last spring because of a cheating scandal has tightened its computer security and will emphasize ethics to students this fall, reports the Associated Press. Dorothy Holden, superintendent of Centerburg, Ohio, schools, says some faculty members were lax about changing their passwords, which helped a student break into computer files and steal tests. Holden says the district will stress ethics when school begins Aug. 26. The district’s final review of the scandal found that about 30 Centerburg High School seniors–about one-third of the class–cheated on world studies tests. Holden says others knew about the cheating but kept quiet. The district canceled graduation in early June, though students and parents held their own private ceremony.