Super Duper® Handy Handouts® a are FREE online, informational newsletters for teachers and parents. I love these handouts for a variety of reasons. Mostly because they are short, accurate, and cover a multitude of topics. I typically will use them to help build better understanding of what a student might need to parents and teachers.
Handouts
They also have these other resources that are special education and Speech Therapist centric resources.
Age Calculator
Apps
CEUs
Handy Handouts
Response Analyzer
SLP Case History Form
Link: Other free resources
Super Duper also sells really good materials to support teaching discrete skills sets primarily around Speech and Language impairments. I find the pragmatic (social skills) materials to be especially helpful in working with students individually and in groups.
Building Momentum in Schools 