Simplify the following text for a Grade 6 native English-speaking person.
Original: He lived in Brasilia and attended the American School of BrasÃ lia until he was 16 years old , when he decided to pursue his racing career full time .
Simplified: He lived in BrasÃ lia and attended the American School of BrasÃ lia . When he was 16 years old , he decided to pursue his racing career full time .