You didn't get dragged around to church as a kid obviously lol. Although I've come to understand that jeans and a button-down are currently considered fine, which well I have a chip on my shoulder against organized religion (although with therapy at least it's a small one) I am firmly against formal wear because I believe it only exists to reinforce the class divide.
Nevertheless, these are little kids, and they made them feel special for accomplishing something impressive in an educational context. So for that I will simply say good job education system, you actually got this one right.
Also that tall one on the right looks like he's doing a Samuel L. Jackson impersonation and nailing it.