How do I adjust to a new school system?

Hello! I am a 15 year old living in the Philippines and I have been given the opportunity to study in Canada, seeing as I am only 15 I will be attending secondary school (most likely public school) and I am very willing to go seeing as it will be an opportunity for growth.
My only concern is that I have a feeling that I would lag behind my fellow peers knowing that the educational system here in the Philippines is lack luster compared to that of Canada.
Are there any tips you guys can give me to lessen the burden? Thanks in advance!