Eric, this is not a new topic, and I would be surprised if there isn't a an explanation in the reference section of this page. The typical position of an adjective (i.e. blanca, loco) in Spanish is after the noun (i.e. casa, pollo); exactly the opposite of English. However, Spanish requires that some adjectives appear before the noun. In any case, they don't mean the same.
Adjectives before the noun give some extra information about the noun. Adjectives after the noun restricts the meaning of the noun. Look at the example:
Invitaron a los educados niños. (this sounds like a poem, if not a bit strange)
Invitaron a los niños educados.
Both sentences appear to be the same (They invited the polite children). However, in the first one, they invited (all) the children, and these children happened to be polite, so there is no restriction. In the second sentence, only the polite children were invited (the ones who were not polite were not invited), so there is a restriction.