More than one of every five students in Alberta and Saskatchewan attend a Roman Catholic separate school.
Provinces are experiencing a shift away from the traditional public school.
Notley government faces a budget deficit of more than $10 billion.
Defunding independent schools in Alberta will increase taxpayer costs, diminish school choice for parents
Public schools in Alberta require more than $13,000 taxpayer dollars to educate a student while independent and charter schools require under $5,300 and $9,000 respectively.
Between 2003-04 and 2012-13, spending on public schools in Canada increased by 45.9 per cent.