Question: At what age do you start high school?
Answer: 14 -- 15
Disambiguated annotations:
qaPairs: question: At what age do the youngest students typically enter 9th grade in US high schools?
answer: 13
question: At what age do the oldest students typically enter 9th grade in US high schools?
answer: 14
question: At what age do the youngest students typically start high school in Canada?
answer: 15