The pass is valid for the one-year period during which the child is a fourth grader or fourth-grade equivalent, from Sept. 1 to Aug. 31 of that year, according to the release.

Any fourth grader who lives in California is eligible for the California State Park Adventure Pass, no matter how they attend school or how old they are. If they are a fourth grader or fourth-grade ...

To be eligible for a pass, children must be in fourth grade. The pass is valid for that one-year period, from Sep. 1 to Aug. 31.