A child who is six years of age on or before September 1 following the beginning of the school year, and who is under the age of 20 and has not completed the 12th grade, is of school age.
Alaska Legal Code
A child who is six years of age on or before September 1 following the beginning of the school year, and who is under the age of 20 and has not completed the 12th grade, is of school age.