They are planning to do more to let the victims' families know they are not alone.
A group of sixth graders met with the school rabbi at the day school to discuss their feelings and ways they can help ease the pain of the families in Newtown.
"We all have younger siblings or daughters or sons and we don't know what it's like to lose them, but we can imagine," Jesse Abed, a sixth grader, said.
Jesse and his friend Alexa used social media to encourage their friends to wear green and white to school on Monday, to support the students and teachers at the Sandy Hook Elementary school.
"I wanted to help the families and show them we respect them and they're not alone," Alexa Wanderman said.
The 400 students at the Jewish day school said a special prayer at morning services for the Newtown community.
"May your presence be felt among all those who are grieving," Rabbi Fred Elias said.
And other students plan to mail letters, send gifts, and travel with their families up to Newtown to offer their condolences and support.
"I want to do as much as I can to make them feel just a little bit better," Abed said.
The school's spiritual leaders are encouraging students to do more, to reach out to strangers during their darkest days.
"Despite this tragedy, we can, with our collective efforts, repair our world," Elias said.
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