twelfth grade#united states wikipedia - EAS
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Twelfth grade - Wikipedia
https://en.wikipedia.org/wiki/Twelfth_gradeWebTwelfth grade, 12th grade, senior year, or grade 12 is the final year of secondary school in most of North America. In other regions, it may also be referred to as class 12 or Year 13 . In most countries, students are usually between the ages of 17 and 18 years old.