A 13-year-old boy collapsed and died following a suspected asthma attack in his classroom, soon after a rugby game on his second day at a new school.
Hannan Ahmed, from Batley, suffered the attack during lessons at Mirfield Free Grammar School, where he had only just started the day before.
The youngster was taken to Dewsbury and District Hospital, where he was put on a life support machine.
However he passed away last week.
Hannan, who previously studied at Batley Business and Enterprise College, had been playing rugby before the suspected asthma attack last Wednesday.
His former headmaster Ian Dutton led tributes to the popular lad, who he said was a keen footballer. “He was a real pleasure to be with,” Mr Dutton said.
“We will always remember Hannan with his wide smile, his engaging conversation and his passion for enjoying life.”
Hannan’s religious education teacher at the Madressah Hira in Staincliffe, where he had studied since the age of five, said: “He was a child who respected everybody.
“He was a bubbly child and he was always there for everybody. It’s a big loss.
“He was like one of our own children here.”
Lorraine Baker, Hannan’s headteacher at his new school, said staff had done “everything we could until the paramedics arrived”.
“He was not alone,” she said.
“I express my sincere condolences and the school’s extreme sadness about such an unexpected death.”
Family and friends of the youngster gathered at the Pakistan and Kashmir Welfare Association near the family’s home in Hawthorn Avenue.
Dozens of members of his large extended family had been visiting him.
His life support was turned off at around 3.30am on Thursday, Ms Ahmed said.