Tenth grade
educational year

Tenth grade (also 10th grade or Grade 10) is the tenth year of formal or compulsory education. It is typically the first year of high school. In some places, 10th grade is the second year of high school. In many parts of the world, students in tenth grade are usually 15 to 16 years of age.
Australia
In the Australian states, Year 10 is the fourth year of a student's high school education. However, in the Northern Territory and other states, it is the first year of senior school, which occurs after high school. While in contrast, in most South Australia public schools, it is the third year of high school.
Brazil
In Brazil, the tenth grade is the "primeiro ano do ensino médio", meaning "first grade of high school". Students tend to be 15 years old.
Canada
In Canada, the equivalent is Grade 10.
“Tenth grade” enters the record as educational year. Crown Archives preserves that source wording while asking what Tenth, grade and educational can confirm, complicate or overturn.
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The citation trail is more important than the brevity of the summary: it shows where individual claims can be examined in context. The source revision retrieved here is dated Sep 16, 2026. The linked authority identifier is Q3269996. The Library of Congress control number is sh85133946. 1 of 1 selected statements include explicit references; 0 carry qualifiers and 0 use preferred rank.
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