Yes, rating is a Scrabble word!

Verb

1. Assign a rank or rating to

2. Be worthy of or have a certain rating

3. Estimate the value of

4. Desert one's party or group of friends, for example, for one's personal advantage

5. Employ scabs or strike breakers in

6. Take the place of work of someone on strike

7. Give (hair) the appearance of being fuller by using a rat

8. Catch rats, especially with dogs

9. Give away information about somebody

Noun

1. An appraisal of the value of something

2. Act of ascertaining or fixing the value or worth of

3. Standing or position on a scale

4. Rank in a military organization