My friend Jessica Allen has been teaching for 30 years (even longer than me!) and has over 60 students including younger child group classes through the Let's Play Music program, which she explains the idea behind and the process of using this program.
I also asked her to share some method books she has used and which types of students they are a good fit for. She shows the books on video if you want to check out the YouTube version or Spotify video podcasts.
Links for the books we talked about:
More piano teaching resources on
how I teach a first piano lesson video