I tried to decipher the UIL rules on school transfers. If you move into another district or school within the same district you do not have to wait to play sports. I think, if correct, you don't even have to have a district meeting with the coaches to vote on yes or no if they can play. So if the parents move into the district because of work, transfer or other cases then the student athlete is not held back from competing in sports competitions or being on a athletic or UIL sponsored school event.
So in other words, if his parents move into the PNGISD school district for work or housing etc, and he is not moved here for athletic reasons, then he is eligible to play or participate in school and UIL sanctioned Event's. It is up to the school district to determine eligibility on each transfer.