Trivia: The show's main character is a gay teenager named Jake who is bullied and mistreated. Chucky's creator Don Mancini has stated that Jake is partially inspired by his own upbringing, as he realised he was gay as a teenager and dealt with some similar issues growing up. (Albeit, he obviously didn't deal with a supernaturally possessed doll.) Mancini has also stated that Chucky is meant to be a metaphor for childhood bullying in the series, as he mistreats and manipulates Jake.
Give Me Something Good to Eat - S1-E2
Trivia: This episode features the first reference to Chucky's offspring Glen/Glenda since the release of "Seed of Chucky" 17 years prior. Both prior sequels ("Curse of Chucky" and "Cult of Chucky") made no mention of Glen/Glenda.
Answer: They were blamed for the death of Jake's foster brother, which was deemed a terrible accident, and they were sent to the reform school as a punishment. Presumably, when they had to leave the reform school given what happened, they were instead given community service as punishment.
TedStixon