Justin Bieber has been dethroned -- by his own master.

According to EOnline, Usher schooled his protege by outselling the teen icon by nearly 40,000 albums.

Bieber's "My World 2.0" dropped to #2 on the Billboard charts in its second week with 291,000 copies sold.

Usher took over the #1 spot, selling 329,000 copies of his brand new album "Raymond vs. Raymond."

Much to learn you have, young padawan.

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