As a community, we statisticians have known for a long time that we do not teach that introductory level class in Statistics as well as we should. This guideline list the things and ways we SHOULD teach as well as things that we might think about leaving out.
Robert Carver, Michelle Everson, John Gabrosek, Nicholas Horton, Robin Lock, Megan Mocko, Allan Rossman, Ginger Holmes Rowell, Paul Velleman, Jeffrey Witmer, Beverly Wood. Guidelines for Assessment and Instruction in Statistics Education College Report. Published July 2016. Available at: http://www.amstat.org/education/gaise.
You can find an earlier version of this page on my blog.