The dedicated profession of teaching, while globally revered, often demands an extraordinary measure of patience and sacrifice, frequently compensating for its essential societal role with modest wages and immense emotional labor.

The tragic story of Sarada “Sally” Sin Praset (45), a devoted computer science teacher in Thailand, reveals the horrific vulnerability faced by educators when their professional standards clash with a student’s unchecked rage.

Sally was fatally wounded by a projectile weapon in a public act of violence orchestrated by her delinquent former student, Annawin Kuya Bebeb (alias Andrew, 20), who targeted her out of severe, displaced anger over a failing academic grade.

This exhaustive analysis details Sally’s lifetime of commitment, Andrew’s entitled path toward delinquency, the mechanical cruelty of the public double fatality, and the definitive death penalty verdict delivered by the Thai courts.

Sally Sin Praset lived a life defined entirely by unwavering responsibility to her extended family. After her siblings left home to start their own lives, Sally readily accepted the immense burden of sole caregiver for her aging parents.

This burden expanded further when her niece and nephew were suddenly left in her care after their mother abruptly abandoned them. Sally willingly embraced this immense burden—managing the household, funding the children’s education, and working tirelessly to provide stability.

Sally secured a challenging but rewarding position at the Sacred Heart Convent School, a prestigious private institution. She quickly established a reputation as an exceptional teacher—efficient, punctual, and highly skilled in her subject matter.

Her commitment to education extended beyond basic requirements; she pursued further qualifications to teach computer science, ultimately dedicating two decades of her life to the university.

Sally’s professional success was her family’s success: she fulfilled her promise, seeing her niece and nephew graduate. Though she sacrificed her own marital prospects, she found deep fulfillment in her career and the quiet pride of her parents, who passed away secure in the knowledge of her dedication.

Andrew’s Path to Delinquency and Entitlement

Annawin Kuya Bebeb (Andrew), 20, contrasted starkly with Sally’s dedication and selflessness. Andrew was a transfer student, having been expelled from his previous school due to persistent behavioral issues.

He was the only son of wealthy, often-absent parents, whose privileged upbringing meant all his desires were instantly met, fostering a severe sense of entitlement and a complete disregard for authority or academic consequence.

Andrew was known for his delinquency, including the consumption of forbidden substances, and aggressive involvement in unauthorized student groups. By August 2023, Andrew had almost completely ceased attending Sally’s classes, devoting his time to leading an unauthorized group involved in frequent confrontations.

The rivalry was intense, particularly against a rival student group led by Tanoron Hong Sawat (Nathan)—who would later become the primary target of Andrew’s fatal assault. Sally, recognizing Andrew’s trajectory toward ruin, felt a genuine sense of compassion and obligation to intervene.

She feared Andrew’s path and felt compelled to offer him extra help with his studies, but Andrew, arrogant and resistant, rejected her assistance, asserting his capability to pass the subject independently.

Sally’s concern only intensified when Andrew’s attendance completely dropped off. She attempted to contact his parents, but they failed to respond, leaving Sally as the only figure of authority attempting to prevent his academic and personal collapse.

Despite Andrew’s delinquency, Sally held onto hope. As final exams approached, she pressured him to submit his missing term papers and projects. In a surprising move, Andrew complied, turning in the required work and taking the final exam, albeit late.

However, his efforts were minimal, his exam performance was poor, and his submissions were substandard. Sally delivered the professional and objective verdict: Andrew failed her computer science subject.

She explained that his poor exam scores and unacceptable paper submissions, combined with his near-zero attendance (a mandatory grading factor), left her no option but to issue the failing mark.

The Grade Confrontation and The Spontaneous Fatal Decision

Andrew was immediately enraged. He confronted Sally, viewing the failing grade not as a direct consequence of his own negligence, but as a direct personal humiliation inflicted by the teacher.

He was accustomed to getting his way; Sally was the only person who had definitively imposed such a severe, negative consequence on his life. This humiliation was the final spark that merged his existing rage (from the gang rivalry) with a new, immediate target: Sally.

The opportunity for a fatal, vengeful act arrived on the morning of November 11, 2023. Andrew, accompanied by his two accomplices, Dong and Minoy, located his rival, Nathan, standing outside a bank and ATM machine.

Andrew, consumed by an unquenchable thirst for revenge over a previous unauthorized group defeat, confronted Nathan. The argument quickly escalated. Andrew produced a projectile weapon and fired multiple rounds, causing Nathan’s immediate loss of life.

In the ensuing chaos, Sally, who had been using the ATM nearby, witnessed the horrific assault. At that precise, critical moment, Andrew recognized Sally—the teacher who had dared to fail him.

In a terrifying act of spontaneous, displaced rage, Andrew instantly turned and fired his projectile weapon at Sally, causing her severe, fatal injuries. Both Nathan and Sally were tragically pronounced de@d at the scene.

Investigation, Capture, and The Death Penalty Verdict

The public double fatality in broad daylight sparked immediate outrage, initiating a massive police manhunt for the three perpetrators. The investigation utilized witness testimony and CCTV footage, which captured the entire terrifying sequence.

Within weeks, investigators identified the three suspects: Andrew, Dong, and Minoy. All three had fled their homes and were attempting to evade capture, but were located and apprehended by December 2023.

At the police station, Andrew confessed to planning the assault on Nathan (the gang rival) but chillingly admitted that his decision to target Sally was instantaneous, fueled by his deep resentment over the failing grade.

Dong and Minoy claimed they were merely accessories, swept up in Andrew’s violent plan. The three male suspects were charged with two counts of homicide (Murder).

The initial court process was fraught with delays, with the suspects repeatedly attempting to stall proceedings by claiming various ailments. However, the legal system eventually moved forward, seeking justice for the victims and their families.

The ultimate fate of the perpetrators was decided on March 29, 2025. After a lengthy trial, the court delivered its verdict: all three—Andrew, Dong, and Minoy—were found guilty of the unlawful taking of two lives.

The court issued sentences that reflected the varying degrees of culpability: Dong and Minoy (Accessories), convicted as accessories to the crime, were sentenced to six years imprisonment.

Annawin Kuya Bebeb (Andrew – Mastermind/Gunman), convicted of two counts of homicide (Murder), received the maximum penalty: the de@th penalty (bitay).

He was also ordered to pay restitution of 1 million PHP to the victims’ families. The verdict was met with relief and satisfaction by the victims’ families and the public, who saw the maximum penalty as a just outcome for the heinous, public crime.

Legacy: Warning Against Displaced Rage and Entitlement

The tragic end of Sally Sin Praset, a dedicated educator who tried to guide a troubled student, stands as a devastating illustration of the dangers of displaced rage and entitlement when intersecting with weak projectile weapon regulation.

Andrew’s inability to accept responsibility for his failing grade metastasized into a violent act that claimed the life of his rival and his teacher. The case fueled long-standing debates in Thailand regarding the need for stricter control over dangerous weapons and the necessity for early and comprehensive psychological intervention for delinquent youths, ensuring that academic frustration does not escalate into deadly violence.