Is 16 a good act composite score?

A composite ACT score of 16 is below average. The average ACT composite score is around 21. While it's not a high score, it's still a score that some colleges will consider. Whether it's "good" depends entirely on the individual's goals and the specific colleges they're applying to. Some less selective colleges may accept students with scores in this range, but highly selective colleges will likely require a significantly higher score.