Mathematics education in the United States

Danvers High School students hold candlelight vigil to mourn the death of Colleen Ritzer, a 24-year-old math teacher at Danvers High School on Wednesday, Oct 23, 2013, in Danvers, Mass. (AP Photo/ Bizuayehu Tesfaye)

Student: Accused Mass. teen stayed after school

DANVERS, Mass. (AP) — A classmate of a 14-year-old Massachusetts boy charged with killing his teacher says she heard the instructor ask the teen to stay after school the day she was killed. Philip Chism […]

10/24/2013

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