At what age do you start high school?
No context provided
At what age do the youngest students typically enter 9th grade in US high schools?
13
No context provided
At what age do the oldest students typically enter 9th grade in US high schools?
14
No context provided
At what age do the youngest students typically start high school in Canada?
15
Education in Canada
https://en.wikipedia.org/wiki/Education%20in%20Canada
Freshman
https://en.wikipedia.org/wiki/Freshman
Secondary school
https://en.wikipedia.org/wiki/Secondary%20school
High school (North America)
https://en.wikipedia.org/wiki/High%20school%20%28North%20America%29
Tenth grade
https://en.wikipedia.org/wiki/Tenth%20grade
In the US, the youngest students to typically enter the 9th grade are 13 years old, while the oldest are usually 14 years old. In Canada, however, students are typically 15 years old when entering high school.