Corrected entry: Poppy wears braces when the final lacrosse game starts. When she goes to her dad and hugs him her braces are gone.
Corrected entry: At the beginning of the film Poppy is told she will go to the same boarding school her mother attended to "straighten up". Nearing the end of the film she was surprised to find out her mother went to that same boarding school despite her father telling her so at the start of the film multiple times.
Correction: Actually, I think that he just meant you're going to a boarding school in England like her Mother. He didn't actually mean that she was going to the same one.
Correction: She is wearing a gumshield.