Yes, TEASERS is a Scrabble word!

Letter values in Scrabble US: T 1, E 1, A 1, S 1, E 1, R 1, S 1.

Is it a valid word?

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

a worker who teases wool
someone given to teasing (as by mocking or stirring curiosity)
an advertisement that offers something free in order to arouse customers' interest
a particularly baffling problem that is said to have a correct solution
an attention-getting opening presented at the start of a television show
a flat at each side of the stage to prevent the audience from seeing into the wings
a device for teasing wool