Two teenage boys who admitted supplying the synthetic drugs that left a classmate in a coma have been congratulated by Perth Children's Court for staying out of trouble since.
The 15-year-old and 17-year-old were handed no further punishment after admitting to supplying the synthetic LSD that left a 16-year-old boy in an induced coma in March.
The boy's academically selective Perth high school became the centre of an organised crime investigation after the teenage boarder at the residential college had to be placed in an induced coma.
The court was told the 15-year-old had sold four tabs of synthetic LSD for $15 each to the 17-year-old, who then shared them with three friends.
The four youths were taken to Sir Charles Gairdner Hospital after the 16-year-old had a seizure and was left in a critical condition.
He was later released but police said the experience had left him "near death".
Police found 11 tabs of synthetic LSD containing the NBOMe compound after the incident.
At earlier hearings, the teenagers admitted supplying the synthetic LSD.
They were allowed to take part in "court conferencing", when youth offenders discuss the offence with parents, police and a juvenile justice officer, the consequences and ways to stop it.
Magistrate Timothy Schwass congratulated the boys for completing the process and told them there would be no more punishment.
The overdose of the 16-year-old came after the death of Preston Bridge in February last year.
He died after taking synthetic LSD and then falling as he tried to jump from a balcony on to a fence at a Scarborough hotel.
A 17-year-old, who cannot be named, pleaded guilty this week to offering to sell or supply prohibited drugs to Preston and his friends in the lead-up to his death.
He was placed on a 12-month intensive youth supervision order without detention and ordered to do 100 hours of community work.