Education in the United States
Nursery school
Playgroup 1-2
Playgroup 2-3
Preschool 3-4
Pre-kindergarten 4-5
Kindergarten 5-6
Elementary school (小学)
1st Grade 6-7
2nd Grade 7-8
3rd Grade 8-9
4th Grade 9-10
5th Grade 10-11
Middle school
6th Grade 11-12
7th Grade 12-13
8th Grade 13-14
High school
9th Grade (Freshman) 14-15
10th Grade (Sophomore) 15-16
11th Grade (Junior) 16-17
12th Grade (Senior) 17-18
Post-secondary education
Tertiary education (College or University) Ages vary, but often 18–22(Freshman, Sophomore, Junior and Senior years)
Vocational education Ages vary
Graduate education Ages vary
Adult education Ages vary
参考资料:http://en.wikipedia.org/wiki/Education_in_the_United_States
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