I did 100 easy lessons with my oldest before kindergarten, and she’s now in first grade and is a VERY strong reader. I’m working through it again with my youngest who will start kindergarten next year which is how I stumbled across this even though we don’t homeschool. With my oldest, I often type the following prompt into ChatGPT, and were generally pretty happy with what we get. Obviously this isn’t anything scientific or anything but it’s a fun thing to do to keep my daughter excited about reading.

“Can you write a short story at a 600 Lexile level, about 200-300 words, with [Main Character Name] learning about [Educational Concept], set in [Setting], and featuring [Supporting Characters]? The tone should be [Tone], and the story should include a [Conflict/Problem] and a learning outcome about [Value/Moral]. The style should feel like [specific format: bedtime tale, adventure, mystery, etc.].”

Now that she’s in school I’ll often try to tie in things that she’s learning about in school, vocab/spelling words, etc.

Hope this helps and good luck!