Candles and teddy bears are placed at Danvers High School prior to a 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. Ritzer was found slain in woods behind the high school, and Danvers High School student Philip Chism, 14, who was found walking along a state highway overnight was charged with killing her. (AP Photo/ Bizuayehu Tesfaye)The Associated Press
Danvers High School teacher Colleen Ritzeris seen in this undated photo provided by the family of Ritzer. Fourteen-year-old high school student Philip Chism was accused of killing Ritzer, a well-liked math teacher at Danvers High School, in Danvers, Mass., whose body was found in the woods behind the school. Law enforcement officials recovered the remains of 24-year-old Ritzer early Wednesday, Oct. 23, 2013, Essex District Attorney Jonathan Blodgett said. Chism was arraigned Wednesday in Salem on a murder charge and ordered held without bail. (AP Photo/Courtesy of Dale Webster via the Lawrence Eagle-Tribune)The Associated Press
Parents and 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. Ritzer's body was found in woods behind the school, and Danvers High School student Philip Chism, 14, who was found walking along a state highway overnight, was charged with killing her. (AP Photo/ Bizuayehu Tesfaye)The Associated Press
Philip Chism, 14, stands during his arraignment for the death of Danvers High School teacher Colleen Ritzer in Salem District Court in Salem, Mass., Wednesday, Oct. 23, 2013. Chism has been ordered held without bail. (AP Photo/Boston Herald, Patrick Whittemore) MANDATORY CREDITThe Associated Press
DANVERS, Mass. – Students are set to return to a Massachusetts school where a math teacher allegedly was killed by a 14-year-old boy.
Classes are to resume Friday at Danvers High School, two days after Philip Chism was charged with murder in the death of 24-year-old math teacher Colleen Ritzer. The school was closed Thursday, but grief counselors were available to students.
Authorities have offered no clues on Chism's alleged motive. They also will not say how Ritzer was killed.
Police and school officials told about 800 parents at a meeting Thursday night there will be extra safety measures to reassure returning students, including locked side doors and more police.
Rabih Chaghouri, whose daughter is a freshman, says he's confident the school is safe. "This could happen in any neighborhood," he says.