Staff and students of River Valley High School returned to school yesterday (July 21), two days after an alleged murder took place on campus.

The Ministry of Education's Director-General of Education Wong Siew Hoong said yesterday that the school is now focused on supporting affected staff and students as "the immediate aftermath of a tragedy like this is critical and sensitive".

Teachers also took time to check in with their students and helped them process the tragic event.

According to a Instagram post by a River Valley High student, teachers were on gate duty at 6:30am and were patrolling the corridors or ushering students around to ensure everyone was well and protected.

"All the teachers I have spoken to today look like they haven't had any rest at all, yet they have all opened their hearts for me to talk to without any hesitation. For that, I will always, always be so grateful," the student wrote.

In an internal letter that was addressed to educators, Minister for Education Chan Chun Sing assured the staff members of River Valley High School that the ministry will "spare no effort" in supporting staff and students through this difficult period.

He also urged teachers to not hesitate to reach out for help if they need to, or know someone who needs help.

"We will mobilise all our counselling capacities to support all who need help. We are in this together and we will support one another through this," Chan said.

Chan added that he was "touched and inspired" by the resilience that the River Valley High community had shown when he visited the school on Tuesday.