Prior to 1967, Portage la Prairie was served by two School Boards. The
Division #24 school board was responsible for Grades 9-12 and District #10 was responsible for Grades 1-8. P.C.I. and A.M.H.S. provided classes for Grades 9-12 and Oakville for Grades 9-11. Prince Charles, Victoria, Fort la Reine, North Memorial, La Verendrye, North Ward (School Board Office) and a two room school (now a home on Roe Street) in Koko Platz provided classes for Grades 1-8. Elementary education in rural Portage was the responsibility of individual districts, each with a school board.

In 1967, the City and the Rural Municipality became a Unitary School Division with one School Board. It was argued that by becoming a Unitary Division, bigger and better schools could be built which would provide an improved quality of education for all students in the school division. As a result, the majority of one room schools were closed and students were moved into city schools.

To preserve the history of the rural schools that closed when Portage la Prairie became a unitary division, the University Women's Club researched and compiled the history of each of these schools. This information is located at the Portage la Prairie City library. In the early 1980(s), two local artists were hired to sketch a picture of each of these schools. Pictures of the rural schools that closed when Crescentview first opened are displayed in the school's main hallway.

Crescentview School first opened its doors as a Kindergarten to Grade Nine school in September 1969 with students from the former School Districts of Overhill, Layland, Gainsborough, Salem, West Curtis, Ridge Road, Kelvin and North and South Ridge as well as students from Koko Platz and Mellenville. Junior High students from Poplar Point, High Bluff and the South East section of the city also came to Crescentview.

William H. Bradley served as principal of this school from 1969 to 1975. Cornelius Furdievich was principal from 1975 to 1999. Ms Katherine Harness became principal in September, 1999 and continues to serve in this position. The enrolment in September 1969 was 679 students. Many changes have been made over the past 25 years in both the building and the programs offered. Originally, Crescentview was an open area school. We now have closed classrooms and a number of other building changes and improvements have been made. Putting windows in most classrooms in 1993 made a significant improvement. The addition of a lift between the gymnasium and the main school level for handicapped has opened up our school to all. 

In 1999, the Gr. 1 and Music classes were moved downstairs when two new classrooms were constructed by taking some space from both the multi-purpose room and the library. In the fall of 2001 a portable classroom was added to house the music class.

In 2005 the Portage School Division made the decision to amalgamate the two high schools and create a K-4 and 5-8 dual track schools.  Crescentview School became the K-4 dual track French Immersion and English school changing its name to Ecole Crescentview School.