I came across this nugget in a review of U.S. research by Anne Podolsky, Tara Kini, and Linda Darling-Hammond, published in 2019: Teachers' efficacy grows most noticeably in their first few years on the job, yet it's possible for teachers to continue improving into their careers' second and third decades.
In a word: whew.
And yet in multiple words, this growth feels double-edged. For example, one area where I've added expertise in recent years revolves around phonemic awareness and decoding. (There are 'reading wars' continuing to be waged, you may have heard.) So now I know enough to get myself into modicums of trouble. Today, that meant puzzling with a bilingual student over the subtle differences that vowel sounds throw at would-be speakers of English or Spanish or both.
I'm taking the recognition and production of those sounds less for granted than I did about 12 hours ago. Humility can qualify as improvement, right?