"Not each"

[LiveWithMiracle]

can we say " Nicht alles" here?

[Menschenkind]

I don't think so. Each translates to jede/jeder/jedes, while alles equals every(-thing), all. It's definite versus indefinite. All of us started school. But: each of us received the same education.

[paradicsomszosz]

What on earth I am know which gender to use???

[Dror.Schafer]

I think, because the subject is unknown to us, you should use the neuter (jedes).