You Chose Incorrectly
The result was a statement about a small enough group of
students--in one elementary school--that it was no doubt
calculated on the entire group of students and there was no
need to take a sample and make a probabilistic inference to
a larger unobserved group.
If the result had referred to a much larger group and been
accompanied by some indication of probability and uncertainty
in applying a sample result to a "population," then it would
have been an example of Inferential Statistics.