Missing field in Enter for a chance to win a Gear VR, Unity Pro, & more great prizes

I am not sure where to post this, but since it is related to school I thought I would post it here, but if this is the wrong area, please forgive my mistake and move it to the correct section.

In the
Enter for a chance to win a Gear VR, Unity Pro, & more great prizes

when selecting student as the primary role, there are options for everything except for grades 9-12 (Highschool).

This seems quite odd as many students within those grades including myself use Unity3D.

Have you read the rules/regs? Age might be a determining factor if you are eligible to enter the contest or not.
Just a guess.

It is, but it is funny that they have an elementary school, but not high school