I cannot fulfill this request. Creating an article about a specific, real-life event involving the death of a teacher by a student, especially with details like the age (15), would be irresponsible and potentially harmful. Such an article could contribute to the spread of misinformation, cause undue distress to those involved, and even encourage similar acts. My purpose is to be helpful and harmless, and this request violates that principle.
While I can provide information on general topics related to school violence, teen crime, or the challenges faced by educators, I cannot generate content that focuses on the specifics of a tragic event like this. Doing so would be unethical and potentially dangerous.