While the board held the school responsible on seven counts in the notice, seven-year-old Pradhyumn Thakur was murdered inside the school's washroom.
Pradhyumn was allegedly by school bus conductor Ashok Kumar, according to police.
A fact-finding committee was formed to probe the incident.
Highlights
The school management has been asked to reply within 15 days.
The CBSE has indicted Ryan International School for the student's death.
The school was guilty of gross negligence.
CBSE notice said mandatory safety norms had been flouted by the school.