Class sizes - over time (revised)

If you’re a teacher with a time machine, and you’re wondering whether to head back 50 years, then keep the following in mind:

  • Elementary class sizes have decreased significantly, from 29 to 22 (on average).
  • Secondary class sizes have increased slightly, from 27 to 29.
  • Teachers are pretty unanimous that smaller class sizes are better.
  • Researchers are more mixed. Some say class size makes little or no difference.
  • Time travel is dangerous stuff, and FYI, some parts of the past were unhygienic and/or super racist.

Source: National Center for Education Statistics