Our last stop was with Bailey in her office, where she explained how the school is the product of melding both British and American cultures and learning practices.
For instance, in an English practice that likely reminds many Americans of "Harry Potter," students enter the school and are allocated into one of three "houses"called Braeburn, McIntosh, and Russet.
Students develop pride in their houses and compete against the students in different houses for points and to win certain awards.
"It really marries the best of the British and the American," Bailey said.
Bailey explained that the application process to get into Wetherby-Pembridge is "child centered."
Students are brought in for a play session before the school meets with parents, so that the final determination is based on the individual child.
There are about 15 students in each of the nursery and pre-k classes, and about 20 girls and 20 boys in the single-sex kindergarten classes. The school aims to maintain that size going forward, so open slots will be determined each year depending on how many students return.
The main dining facility is almost complete, so for now students eat in a temporary room. Once it's done, they will all eat on china and with real silverware "to emulate that sense of decorum," Bailey said.
Students eat their meals in a "family-style model" and they learn table manners right from the start. Their food is served in courses, and they learn that the first course is cleared away before they are served the next course.
They "respond really well to it," Bailey said, noting they have well-developed tastes already. Kids ask for kale and greens with their lunch meals.
Despite the school's English roots, the majority of families in Wetherby-Pembridge are American.
While there are some British families at the school, the majority are New Yorkers, according to Bailey.
Energetic students ran up the stairs and skipped through the hallway.
The children work off the rest of their energy during weekly trips into Central Park, across the street. They also go to the 92nd Street Y to take swim lessons and other gym-type classes. Fencing is offered to students, and the school hopes to bring in cricket soon.
As we walked up to the next floor, Bailey explained why the school splits kindergarteners into single-sex classrooms so early.
Wetherby-Pembridge believes kids learn best in single-sex classes and points to results seen back in the UK to strengthen its argument.
It is the only school that offers single-sex kindergarten classes in Manhattan, to Bailey's knowledge.
The school places a large emphasis on UK manners and traditions.
"Three values underpin the entire school: respect, resilience, and responsibility," Bailey said.
But manners might be the most unique aspect of Wetherby-Pembridge's culture. The school stresses "pleases," "thank yous," and "good mornings," according to Bailey.
Wetherby-Pembridge follows the British national curriculum.
"Children are exposed to letters and phonics and numeracy a little earlier than they might be in other American preschools," Bailey said.
In addition to their core curriculum, all students at the school take music classes and learn Spanish as a foreign language.
We stepped into a pre-K classroom where students were playing their bells to the count of their music teacher's voice.
The first floor of the school contains the nursery and prekindergarten classes. Students are in co-ed classes until kindergarten, when they split into single-sex classrooms for core curriculum.
What we thought was the school's front entrance opened into a vestibule that led into the true entrance of the school, a serene courtyard closed off from the avenue's traffic outside.
The building was originally constructed as the mansion residence of influential American architect Ogden Codman in 1913.
Codman had "wanted to turn 96th Street between Fifth and Madison Avenues into an elegant Parisian ensemble," and his own home was no exception. He designed the building in neo-French Renaissance "Beaux-Arts" style, inspired by his childhood in Paris, according to Bailey.
We met Kate Bailey (left), the Wetherby-Pembridge head of school, for a tour.
We soon saw the signature uniform that all students wear. Girls wear plaid grey dresses and boys wear grey blazers. Boys wear a polo shirt under their blazers and then graduate to a shirt and tie in kindergarten.