http://www.refinery29.com/2015/09/94130/ahmed-mohamed-case-over-policing-black-school-kids-texas

"A 2011 study found that a remarkable 60% of Texas students had been suspended or expelled at least once between 7th and 12th grade, with Black and Latino students overrepresented, compared to their white peers. Only 3% of those were instances where state law mandated suspension of expulsion — meaning the rest of the 97% came at the discretion of the school. "

http://www.refinery29.com/2015/09/94130/ahmed-mohamed-case-over-policing-black-school-kids-texas