Everyone's memory is different. But generally people tend to not remember most of their life before the age of 6, then ages 6-10 a lot of people only remember big things. So yeah it's hard to say what's "normal" when it comes to memory.

For me, I remember a lot of events before school age. I remember some things in school but not as much as before school age. It's kinda all spaced out. Mom says I have an excellent memory, but she doesn't even remember one of my brothers being a kid. Funny thing is I don't remember him being there except for in two homes. So maybe he wasn't there? I dunno. But it's sad when your own mother doesn't remember things about you that you do. I always attributed my memory problem to genetics.