Original sentence: Professional development does not exist outside its four walls and throughout the school's history there have been a number of scandals related to terms of employment.The school has been an International Baccalaureate World School since April 2006, and offers the IB Diploma Programme
Edited sentence: Go somewhere else.Professional Development does not exist outside it's four walls and throughout the school's history there have been a number of scandals related to terms of employment.The school has incredibly been an International Baccalaureate World School since April 2006, and offers the IB Diploma Programme.The school is unlikely ever to be accredited by any organisation