Turkey discusses teacher Fatma - Her student devised the murder plan in this way

Fatma Nur Çelik, a teacher at Istanbul Technical Anatolian High School, was subjected to a knife attack by her 17-year-old student.
Aztəhsil.az reports that the 44-year-old biology teacher, who was severely wounded in the attack, passed away in the hospital despite the efforts of doctors.
Her p was brought to the school where she worked, and a farewell ceremony was held. These images have dominated Turkey's agenda.
According to preliminary information, the student who committed the incident had participated in a fight at school last year, and the teacher had warned her colleagues at a meeting, saying, “our lives are in danger.”
According to allegations, the 17-year-old student was discharged from the Bakırköy Mazhar Osman Mental and Neurological Diseases Center by his father two days before the incident.
After being discharged from the hospital, he checked the school's timetable to find out which class the teacher was in at what time and then made a plan accordingly.
The student, who arrived at school in the morning, went directly to the classroom and at around 11:00 AM, first attacked teacher Fatma Nur Çelik with a knife.
A 15-year-old student and another teacher who tried to intervene were also injured.
President Recep Tayyip Erdoğan commented on the incident, which became a national agenda item, as follows:
“I pray for God's mercy upon our teacher Fatma Nur Çelik, who passed away in the horrific attack.
I extend my condolences to the family and relatives of the deceased, as well as to the entire education community who serve our country with great dedication. There can be no justification for violence against our teachers.
Even if we set aside violence, or even disrespect towards a teacher, this act against a person about whom it is said, “I would be a slave for 40 years to anyone who teaches me a single letter,” is unacceptable. 
This incident, which has saddened our entire nation, will be thoroughly investigated and everything necessary will be done to ensure the perpetrator receives the punishment they deserve.
I also pray to Almighty God for the swift recovery of our teacher and student who were injured in the same attack.”