Nancy school is like a club of people who study a type of art called classical ballet. They have their own special way of doing ballet and they teach others this way too. It's like if you go to a special school that teaches math in a certain way, and you become part of a club of people who also learned math that way. The Nancy school is named after the city of Nancy in France where it started a long time ago. The people who study Nancy school ballet use a lot of small steps and movements to make their dance look graceful and elegant. They also focus on making sure every little move is done just right, like if you were trying to build a really tall tower of blocks and each block had to be in just the right spot. Overall, the Nancy school takes ballet very seriously and wants the dancers to be very precise and careful in how they move.