If you are a Teacher at a Government School with a degree, then you can apply for the Competitive Examination for the Recruitment to the Class 3 of the Sri Lanka Principals' Service - 2015.
Competitive Examination will be held on July 2014 and this be conducted by Department of Examinations.
Application and More details
Application and details can be downloaded from Government Gazette of 10 April 2015
More details on Sri Lanka Principals Service from Ministry of Education Website: