Finishing School Book the First: Etiquette & Espionage by Gail Carriger

http://www.finishingschoolbooks.com/
From New York Times bestselling author Gail Carriger comes the first in a four book series for young adults, set 25 years before her bestselling Parasol Protectorate series.

Fourteen-year-old Sophronia is the bane of her mother's existence. Sophronia is more interested in dismantling clocks and climbing trees than proper etiquette at tea--and god forbid anyone see her atrocious curtsy. Mrs. Temminnick is desperate for her daughter to become a proper lady. She enrolls Sophronia in Mademoiselle Geraldine's Finishing Academy for Young Ladies of Quality.

But little do Sophronia or her mother know that this is a school where ingenious young girls learn to finish, all right--but it's a different kind of finishing. Mademoiselle Geraldine's certainly trains young ladies in the finer arts of dance, dress, and etiquette, but also in the other kinds of finishing: the fine arts of death, diversion, deceit, espionage, and the modern weaponries. Sophronia and her friends are going to have a rousing first year at school.