Try to find out when is school break in BC. As far as I understand (remember that I have no kids), school break occurs at different times in different provinces. I am sure that Quebec and Ontario do not have school break at the same time.
Spring Break for Vancouver public schools is from March 13th to March 21st 2004. Generally, the private schools go an extra week after, but with easter being so close might be before. Either way, private schools don't have the huge enrollment that the public system has.