Are high arches common in people who have over-pronating feet?

No: Usually those who overpronate have flattened arches.

Usually not.: High arches tend to be associated with more rigid feet that under pronate. However, you can have a high, but unstable arch. Keep in mind that the height of your arch when seated isn't as important as the difference in your arch height between the seated and standing position.

High arches: High arched feet is a bio mechanical condition that may be genetic, but is not caused from hyper pronation. It comes from supination. There may be a neurological component that should be investigated. See your podiatrist for an evaluation.