Independent schools would likely want so wine who has experience working in international private schools or some Canadian experience. As your article says and based on my knowledge there are Job availability in greater Vancouver because of the high cost of living and lower teacher salaries in BC. The openings tend to be in specialized teaching like French teachers not general teaching or subjects like the arts or social studies. Teachers in rural areas are a problem in a few provinces. It is unlikely that a board will try to hire someone who is currently 55. The board will want to hire someone who is younger and might want to remain longterm and is more likely to complete the 1 year teacher retraining.