Just signed on to the Educational Writers Group (EWG) within the Society of Authors; I was focussed on writing novels for my first years of membership. It's very friendly. They have a writer-teacher blog-of-the-month, inspiring to read. Have given me the April slot!
Hope you know that you can join the Society on strength of one book or just a book contract. Extremely helpful. Also, the EWG send out emails, including a recent one re educational publisher looking for writers.
Went to Kew on Sunday to see the magnificent Moores; now off to see the First Emperor warriors at the British Museum. Rich life.