Learn English – Word for expressing when someone study alone

single-word-requests

When someone prefer to study alone, on his own, without school, I am tempted to use "self-student". But this word apparently doesnt exist.
Is there better way how to express this in one word?

EDIT

I wish to express that someone is good self-student. For example "Peter is a good self-student"

Best Answer

Perhaps you are thinking of an "autodidact: a self-taught person."

See: http://www.merriam-webster.com/dictionary/autodidact

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