Yes, JACKALS is a Scrabble word!

Letter values in Scrabble US: J 8, A 1, C 3, K 5, A 1, L 1, S 1.

Is it a valid word?

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

Old World nocturnal canine mammal closely related to the dog; smaller than a wolf; sometimes hunts in a pack but usually singly or as a member of a pair

Also: canis aureus.