Knox teacher Wiliam Gulson arrives at   Downing Centre Court on Tuesday, 27 January 2026.  Gulson has been charged with child grooming.   Photo: Sam Mooy / The Sydney Morning Herald
Share this @internewscast.com
A former school teacher’s excuses for graphic internet searches and a sexualised chat with a teen have been slammed as wholly unconvincing, as he was found guilty of a child sex offence.
William Roberto Gulson taught at Sydney’s elite Knox Grammar School and conducted private tutoring before he messaged a 15-year-old girl, posing as a boy, in August 2024.

In a recent case presented at Sydney’s Downing Centre Local Court, it was revealed that a teenage girl, alongside another adolescent, was operating a counterfeit profile on the LGBTQI dating app Grindr. Their aim was to expose individuals with predatory tendencies.

Knox teacher Wiliam Gulson arrives at   Downing Centre Court on Tuesday, 27 January 2026.  Gulson has been charged with child grooming.   Photo: Sam Mooy / The Sydney Morning Herald
Knox teacher Wiliam Gulson arrives at Downing Centre Court on Tuesday, 27 January 2026. Gulson has been charged with child grooming. Photo: Sam Mooy / The Sydney Morning Herald(Sam Mooy)

During the court proceedings, it was disclosed that a teacher responded to a photograph sent by the teenager with the compliment, “Such a cute boy.” This exchange was significant as it contradicted the teacher, Mr. Gulson’s assertion that he believed he was communicating with an adult.

The court heard that Gulson did not once refer to the person he was conversing with as an adult in their extensive conversation. Instead, he urged the supposed boy to leave his parents’ home secretly so they could rendezvous and find a “quiet place” for intimate activities.

Adding to the gravity of the situation, Gulson went on to describe in explicit terms the sexual acts he wished to engage in with the teenager. This revelation underscored the seriousness of the charges against him.

“Collectively, this is powerful evidence,” remarked Donnelly, highlighting the strength of the case built against Gulson based on the evidence presented.

“Collectively, this is powerful evidence,” Donnelly said.

Gulson, who faced a three-day hearing in September, remained impassive as the guilty verdict was handed down.

The offence carries a maximum penalty of 12 years behind bars.

His bail was continued ahead of his sentencing in March.

Gulson did not speak to reporters as he left the courthouse alongside his brother, who was at his side during the hearing.

The family of the teenager dialled into the courtroom to hear the outcome after being granted special permission.

1800 RESPECT (1800 737 732)

National Sexual Abuse and Redress Support Service 1800 211 028

Kids Helpline 1800 55 1800 (for people aged 5 to 25)

NEVER MISS A STORY: Get your breaking news and exclusive stories first by following us across all platforms.

Share this @internewscast.com
You May Also Like

Bravery at Bondi: Honoring the Courageous Heroes of the Junction Stabbing

In brief Eight people have been recognised for their bravery during a…
Coalition calls for 5 per cent deposit scheme to be for only Australian citizens

Exclusive 5% Deposit Scheme: Coalition Advocates Citizenship-Only Access

The leader of the federal opposition addressed listeners on 2GB before presenting…
Aussies' private travel details accessed by 'unauthorised parties'

Unauthorized Access to Australians’ Private Travel Information: What You Need to Know

Popular travel website Booking.com has warned customers that their personal information including…
Damien Guérot and Silas Despreaux (L-R) Bondi Junction Westfield bollard man hero

Bondi Junction Heroes Recognized: Community Honors Bravery Two Years Post-Tragedy

Two years following one of the most devastating mass casualty incidents in…
Perth, Australia - March 27, 2025: Drone photograph of buildings around Elizabeth Quay at sunset.

The Two Cities in Australia Where Residents’ Wealth Increases by $50,000

Homeowners in Perth and Brisbane are set for a major boost, with…
Their deaths could and should have been prevented

Preventable Tragedies: How These Lives Could Have Been Saved

A mass killing by a British teen who fatally stabbed three little…
Trump tips food delivery driver $140 for McDonald's order

Trump’s Generous $140 Tip on McDonald’s Delivery Sparks Internet Buzz

US President Donald Trump has tipped a food delivery driver at the…
A man has been stabbed in his own home in Queensland.

Early Morning Home Invasion in Queensland Leaves Man with Multiple Stab Wounds

A Queensland resident is in critical condition after sustaining multiple stab wounds…

Queensland Man Challenges ‘Insane’ Law After Being Charged for Using New Banned Phrases

In a recent court appearance, a 70-year-old man, Jim Dowling, is set…
Underworld figure Gavin Preston, 50, was gunned down by two men dressed in black while eating breakfast at a cafe in Melbourne's north-west on September 9, 2023.

Two Suspects Stand Trial for Alleged Underworld Hit Plot at Local Cafe

Prosecutors have painted a vivid picture of a meticulously orchestrated assassination involving…
Charges after major police operation in NSW Hunter region

Major Police Operation in NSW Hunter Region Leads to Arrests

A 34-year-old man has been charged with domestic violence offences after a…
for lease sign money australia

Struggling with Soaring Costs? Why Australians Are Returning Home or Rekindling Ties with Exes

As living costs continue to climb, many Australians are opting to move…