If the TJ eggs are from Commercial White Leghorn hens it is certainly possible to get Barred chickens in the F2 generation(crossing the offspring from the initial TJ hatch). Commercial White Leghorns generally have Barring genes to suppress any black feathers. If they use Austra-White (lightly tinted eggs) or California Grey these could produce barred chickens in the first hatch. I don't have personal knowledge of the layers of TJ eggs.
Thank you after talking with my friend some more they would have been F1 seeing the pictures they are barred bearded birds. I'm thinking there were some other eggs besides TJ that were included in the classroom experience.