However, Tulsa didn't earn a spot on this year's list just for its attack on one student's fundamental rights; it also targeted Tulsa's student newspaper, The Collegian, for covering Barnett's suspension.
Korean-language schools have been targets of hate mail, harassing telephone calls and sometimes attacks on students.
In recent years, a pattern of attacks on students, teachers and education facilities has emerged, with schools targeted in particular by extremist groups.
I'm allergic to everything from mosquito bites to pine nuts, and so I was afraid of getting stung, but I knew that the general campus procedure was to spray bee swarms to prevent attacks on students.
Chart: "FOR THE RECORD: Sexual Assaults in Public Schools" New York City's rate of sexual attacks on students by other students or by staff members has jumped 13percentthis yearandand ranks higher than that of any other city.
Mahamid Ahmed, the postgraduate taught rep on the NUS NEC, said he felt the union needed "a president who fights government policies and their attacks on students properly, and not just through rhetoric".
But after the recent attacks on students in this dusty dirt-road suburb of Port Harcourt, terrified residents say they were safer before the government enticed the militants to leave their hide-outs along the creeks that weave through the area.
Even after a year of relentless attacks on students – 67 teenage boys were burnt alive in their dorms last year, marking the start of a wave of attacks that has since seen hundreds of pupils killed – Chibok stood out for the sheer scale and cruelty.
Apart from Bergfeld, they include Liam Burns, president of NUS Scotland and Shane Chowen, NUS vice-president.Bergfeld said the NUS needed a new leader who "does not dither in the face of the huge attacks on students in terms of massive hikes in tuition fees, youth unemployment and police violence at protests".
