Yes, KAOLIANGS is a Scrabble word!

Letter values in Scrabble US: K 5, A 1, O 1, L 1, I 1, A 1, N 1, G 2, S 1.

Is it a valid word?

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

sorghums of China and Manchuria having small white or brown grains (used for food) and dry pithy stalks (used for fodder, fuel and thatching)