I’m working with a friend on a small project about teacher persistence (I’m just assisting in some technical details). And then he told me something that I didn’t know before: 10% of public K-12 teachers are part-time. We have to exclude this population from study because the estimates of some key variables by age group would be unstable.
But the number took me aback a bit. Sometimes people are part-time because they’re the K-12 equivalent of adjuncts, experts in some career area who teach career education part-time. Or they’re in a part-time position or job-sharing. But a good number of those are long-term substitutes, permanent subs, so to speak.
No great policy insight here. Just a number.