<P> Twelfth grade , senior year , or grade 12 is the final year of secondary school in North America . In other regions it is also equivalently referred as class 12 or Year 13 . In most countries students then graduate at age 17 -- 18 . Some countries have a thirteenth grade , while other countries do not have a 12th grade / year at all . Twelfth grade is typically the last year of high school ; graduation year . </P>
<P> Twelfth grade , senior year , or grade 12 is the final year of secondary school in North America . In other regions it is also equivalently referred as class 12 or Year 13 . In most countries students then graduate at age 17 -- 18 . Some countries have a thirteenth grade , while other countries do not have a 12th grade / year at all . Twelfth grade is typically the last year of high school ; graduation year . </P>
what is the last grade of high school
what is the last grade of high school
Twelfth grade
Twelfth grade