High school application materials
Some Canadian high schools, under the age of 18, do not need to do any notarial certificate, such as Jinshan Education Bureau and St. Jeames Education Bureau. However, if it is 18 years old or older, you need to apply for these schools, but you need to do birth and crime-free notarization.
University application materials
Some schools need notarized diplomas and grades when applying for schools, and they also need them when applying for visas, such as Simon Fraser University and York Education Bureau.
Parental income certificate
When applying for a visa, parents' income certificates only need Chinese originals and translations, without notarization.
Different material requirements
So different schools and different personal situations need different materials.