Is 660 a good GMAT score?

GMAT score of 660 can be considered good, but it ultimately depends on the context of your goals and the schools you're applying to. While it may not be exceptionally high, it's still within the range of scores that many reputable business schools accept. 

However, it's essential to consider other aspects of your application, such as your academic background, work experience, and extracurricular activities. Additionally, research the average GMAT scores of the schools you're interested in to gauge where you stand relative to their admissions criteria. Remember, a strong application is more than just a single test score.