Any dental school has a pediatric dentistry school, but it depends on where you are. In Indiana most dentists learn their craft at IUPUI. In North Carolina the best dentistry school is at UNC CHapel Hill.

yes it is (derived from the handbook of pediatric dentistry )

Pediatric dentistry does require additional training, which involved a two-year residency similar to a medical residency. Some states also require passing an examination besides the general dentistry examination.

ugly duckling stage

Pediatric dentists provide dental care to children. They are responsible for cleaning teeth in children and teaching them about dental hygiene.