£3.6 million plans for St Mary's school have been given the green light in Tynwald.
The proposed plans will see five new classrooms built, with an extension to the school hall.
Education, Sport and Culture Minister Graham Cregeen says the work is needed to update inadequate and outdated facilities.
The work is due to be completed by August 2019.
TT merchandise company still owes government over £100k
Manx Care's annual assessment shows £15.6m deficit
House of Keys to sit this morning
Police launch winter car checks campaign
Six new buses to replace 14 year old ones
Record number of seal pups recorded
Proposed laws could mean free period products