[PeterisP]

I strongly believe that even if we'd accept the notion that this awkward conversation needs to be sidestepped, it's completely inappropriate to do it by invalidating the reality of that child's family and requesting them to agree to a ridiculous lie ("no, you have a mama and a papa") which insults their family. Arguing about this topic is entirely opposite to sidestepping the issue, it's the teacher explicitly starting the awkward conversation and failing at it.

Furthermore, while that indeed is not the lived reality for the majority of the individual kids, it's IMHO relevant for very many classrooms or teachers which will have at least one family like that; with 20-30 kids in a classroom, a 1% "rare case" will be represented in 20-30% classes and in almost every school.

Also, it's my understanding that the traditional family model is not even the majority in quite a few places where less than 50% of kids are raised in a marriage with both their parents, due to divorces, remarriages, deaths in family and simply single parents; so a kid may have a "mom and two dads" (i.e. the biological dad and mom's husband) or many other family structures; I recall hearing an (tragic?) joke about a particular class observing that there the majority kids were raised by two-woman family, namely, their mother and grandmother; etc. So it is important for teachers to acknowledge the diversity of actual parenting, you can't assume that "a mom and a dad" families are universal because so many families are not like that, those are not rare edge cases or exceptions, and they can't even be treated as deviation from the norm because in current society the nuclear two-parent family is not that dominant to be considered a true norm.