St. Mary’s Public School Devli,is a highly reputed educational institution situated in the heart of devli village. From the last three decades, the school upholds its motto " Knowledge is Enlightenment " and is successfully providing good quality education with advance technologies to the children in South Delhi’s remote areas of Devli and Sangam Vihar.St Mary’s,Devli started its journey on a rented building with few children. At present, school holds a very significant role in the field of education,and has its own well constructed building, spacious and ventilated classrooms all because of the hard work of the management and the dedicated staff.