I have been a publisher for 15 years, starting the process because it sounded like a good idea. Since then I have completed my Masters of Editing and Publishing, worked with 100s of creators. I can do talks for teens or adults about understanding the publishing process.
I focus on the process of story to reader. Aimed at high school students or adults. The talk can modified for primary school students if they want to understand all the steps to getting a book to the reader and can have a career opportunity focus.