Eh. Probably best to not have a teacher making fun of a kid in front of his peers. That said . . . if I were that parent I would be far more upset with my kid for not getting his/her work done on time.
I never agree with Carlfense, so I have to make an exception to my rule here. I don't see how calling out an 8 year old because they have a deadbeat parent(s) accomplishes anything. An 8 year old that doesn't complete homework is nothing short of bad parenting. I would think any teacher would recognize that.