Yes, READERS is a Scrabble word!

noun

1. a person who enjoys reading
2. someone who contracts to receive and pay for a service or a certain number of issues of a publication
3. a person who can read; a literate person
4. someone who reads manuscripts and judges their suitability for publication
5. someone who reads proof in order to find errors and mark corrections
6. someone who reads the lessons in a church service; someone ordained in a minor order of the Roman Catholic Church
7. a public lecturer at certain universities
8. one of a series of texts for students learning to read