The province says it will renovate St. Mary's Academy to create a primary to Grade 12 school.
It will replace the aging St. Mary's Education Centre, which is a primary to Grade 7 school.
The project involves building new classrooms and a second gym, music room and drama rooms.
St. Mary's Academy has 146 students in grades 9 to12, while St. Mary's Education Centre has 173 students.
The $6.3-million project is expected to be completed during the 2013-14 school year.