Following Erin Becker’s analysis of our instructor training data, Byron Smith has done another analysis using survival statistics. The three key figures are:

Days between certification and first teach

Survival curve of days to teaching for the first time

Survival curve of days to teaching a second time after having taught once

Long story short, about half of instructors teach within 200 days of certifying, and about half of those teach again with 100 days. If anyone has similar stats from other volunteer teaching organizations, we’d be grateful for pointers.

This post originally appeared in the Software Carpentry blog.