Sources of Work
I have written for a huge variety of markets, including those listed below. I can provide you with valuable contact details for many companies requiring educational writers.
Textbooks, 'home learning' and teaching notes
If you can write to a tight brief with little variation, this type of writing can be very lucrative. Successful writers of this type of material are usually current or former teachers. It stands to reason: you need a thorough knowledge of the education system, and in the UK you need to be up to date with the National Curriculum.
Information packs
Charities and many other organisations often commission educational writers to create education packs to their brief. This can be fun if you have a particular interest in the subject. It is often worth sending samples of your work and ideas for projects to these organisations. Even if they have no work on offer, they will often store your details for later contact.
Internet
The Internet is a huge source of commissions for educational writers. Many charities and organisations regularly require new educational activities for their websites.
Comics and Magazines
This is a fast growing market, and a lucrative source of work for educational writers. Many comics will offer a weekly income.