ONIX Code Lists Issue 22, July 2013
List 77: North American school or college grade

Value Description Notes

P Preschool Age typically 0-4 years.
K Kindergarten Age typically 5 years.
1 First Grade Age typically 6 years.
2 Second Grade Age typically 7 years.
3 Third Grade Age typically 8 years.
4 Fourth Grade Age typically 9 years.
5 Fifth Grade Age typically 10 years.
6 Sixth Grade Age typically 11 years.
7 Seventh Grade Age typically 12 years.
8 Eighth Grade Age typically 13 years.
9 Ninth Grade High School Freshman – age typically 14 years.
10 Tenth Grade High School Sophomore – age typically 15 years.
11 Eleventh Grade High School Junior – age typically 16 years.
12 Twelfth Grade High School Senior – age typically 17 years.
13 College Freshman Age typically 18 years.
14 College Sophomore Age typically 19 years.
15 College Junior Age typically 20 years.
16 College Senior Age typically 21 years.
17 College Graduate Student Age typically 22+ years.