Writing Esl writing material

Hi guys!

I’m working as an English tutor for this publishing company at the moment, and recently they asked me if I would like a job helping them write Children’s stories to coincide with some teaching material. Essentially, they have an illustrator who designs the pictures, and I’m expected to write a story to go along with the pictures and then create sentence patterns and dialogues for the teaching portion. There are two different series of books, each with 10 different stories.

Has anyone ever had experience with this kind of work? I’ve never had experience with this kind of work, but I’ve always enjoyed writing, and having the experience of working on childrens books would be an invaluable experience. There was never any mention about compensation either, but I definitely wouldn’t do this for free. How much should one expect for this kind of work in terms of compensation? Any helpful advice will be appreciated.