Yes, SCOPES is a Scrabble word!

Letter values in Scrabble US: S 1, C 3, O 1, P 3, E 1, S 1.

Is it a valid word?

SCOPES is a valid word in the official Scrabble dictionary (US), the UK Scrabble Dictionary and Words with Friends (ENABLE).

Tennessee highschool teacher who violated a state law by teaching evolution; in a highly publicized trial in 1925 he was prosecuted by William Jennings Bryan and defended by Clarence Darrow (1900-1970)
an area in which something acts or operates or has power or control: "the range of a supersonic jet"
the state of the environment in which a situation exists
a magnifier of images of distant objects
electronic equipment that provides visual images of varying electrical quantities

Also: john scopes, john thomas scopes, cathode-ray oscilloscope.

Not playable in Scrabble US: CRO.