Family decision paths
One family can have two children and two completely different decisions.
A university ranking is only the first layer. Start each child with the program, application system and evidence their decision actually requires.
Business
Compare the programs families actually mean
Smith, Rotman, Ivey, Schulich, Sauder, Beedie and Gustavson, compared by entry model, application work and family fit instead of a recycled university rank.
Build the business shortlist →Medicine
Plan an undergraduate route, not a mythical pre-med rank
Compare broad science, named health-science and other degree routes against the medical-school requirements that actually matter.
Build the pre-med plan →How to use this with siblings
Open one path for each child. Keep the shortlists separate, because the right evidence, deadlines and application work are different. Compare universities only after each child's program route is clear.