Photo by NCinDC. A few weeks ago six Dunbar High School students were arrested for the sexual assault of a fellow student, and subsequently released with no explanation. This week, DCPS Interim Chancellor Kaya Henderson ousted Friends of Bedford, the private firm that had been running the school. Now, the Washington Post’s D.C. School Insider blog published a saddening account of the neglect, lack of accountability, and pervasive bullying at the high school. Bill…