All Classroom Q&A posts on race and gender challenges from the past eight years are described and linked to in this compilation post.

The new question-of-the-week is: What are the biggest mistakes made in math instruction and what should teachers do instead?

A five-part series on mistakes made by school administrators is wrapped-up today with commentaries from Dr. Lynell Powell, Stuart Ablon, Alisha Pollastri, Diane Mora and many comments from readers

Julie Hasson, Ryan Huels, David Bosso, Cindy Terebush and Kelly Wickham Hurst contribute their thoughts on administrators and the mistakes they make.

Stephen Fleenor agreed to answer a few questions about his new book, "Teaching Science to English Learners," written with Tina Beene.

Here are the most popular Classroom Q&A posts published during this past school year.

Jen Schwanke, Dr. Jenny Grant Rankin, Harvey Alvy, Michael Haggen, James Erekson, Michael D. Toth write about their experiences working as, or with, school administrators.

Baruti K. Kafele agreed to answer questions about his book, "The Aspiring Principal: 50 Critical Questions for New and Future School Leaders."

Dr. PJ Caposey, Sarah Said, Amy Fast, Andrew Miller, Anthony Kim, and Edward Cosentino share their observations on mistakes administrators make and how to avoid them.

Commentaries from Anne Vilen, Marcy Webb, Dr. Jason Kotch, Roxanna Elden, Baruti Kafele and Dr. Manuel Rustin "kick-off" this five-part series on administrator's mistakes.