It’s been four years since a gunman entered Sandy Hook Elementary School in Newtown, Connecticut, and killed 20 students and six educators before taking his own life. The town has planned a moment of silence to remember the victims and has asked all town employees to stop working between 9:30 a.m. and 9:45 a.m. as a sign of respect. Gov. Dannel Malloy also requested that all flags remain at half-staff Wednesday.

"I am certain that many of you will join me in finding private space for personal reflection as the Newtown community continues to recover from an unconscionable act of violence," said Newtown School Superintendent Joseph Erardi Jr.

Though the town does not usually have a designated memorial event, prayer services were planned for Wednesday.

"It never ceases to amaze me the ripple effects that we still feel," Jennifer Barahona, executive director of the Newtown-Sandy Hook Community Foundation, told the Hartford Courant.

Since the shooting, 77 related charities have been registered at the Attorney General’s office and have raised more than $28 million. Much of that money has gone to in-school mental health services.

"We had someone who was really debilitated just come forward now who needs a lot of assistance," said Barahona. "There is no uniformity to grieving and people are all over the map when it comes to the help they need."

Sandy Hook Elementary School was demolished in 2014 and rebuilt two years later on the same site. The $50 million new school has advanced security measures including gates, deadbolt locks, impact resistant glass and surveillance cameras.

"I have respect beyond words for the personal bravery and strength of the survivors in Newtown – and for the tens of thousands of others who shoulder such pain and loss each day across our nation," said Connecticut Sen. Richard Blumenthal on the anniversary in 2015. "We will never forget the loved ones lost, and I will never abandon this cause. We must honor with action today and every day."

RTSKB35 The new Sandy Hook Elementary School in Newtown, Connectict,has advanced security measures including surveillance cameras and impact resistant glass. The building is shown here Jul. 29, 2016. Photo: Reuters

RTX16VC7 The gunman's car is pictured outside of Sandy Hook Elementary School in Newtown, Connecticut, Dec. 27, 2013. Photo: Reuters

RTX16IQT A heart bearing 26 crosses for each victim of the Sandy Hook school shooting is pictured in Newtown, Connecticut, Dec. 14, 2013. Photo: Reuters

RTX16VAP A gun is seen inside a classroom at Sandy Hook Elementary School in Newtown, Connecticut in this evidence photo released by police, Dec 27. 2013. Photo: Reuters

RTR3BTLA Sandy Hook Village firefighters observe a moment of silence in Newtown, Connecticut, Dec. 21, 2012. Photo: Reuters

RTR3BPPO School buses drive past a memorial in Newtown, Connecticut, Dec. 18, 2012. Photo: Reuters

RTX16VAM A shattered window at Sandy Hook Elementary School in Newtown, Connecticut is shown in this picture released by police, Dec. 27, 2013. Photo: Reuters

RTX16VA8 The inside of Sandy Hook Elementary is shown in this evidence photo released by police Dec. 27, 2013. Photo: Reuters

RTX16V8X Bullet holes can be seen in the windows of Sandy Hook Elementary School in this evidence photo released by police, Dec. 27, 2013. Photo: Reuters