Hello lemonbar,
I'm new to this site too and having PCS symptoms I can really identify with what you are going through.
I've worked in schools in the UK and know how valued the local volunteers who come into school to help with reading skills are. Teachers are so busy there is no time to read on a one to one basis with a child who is struggling. Often the child's parents have poor literacy skills so they don't get the help at home. It usually takes place in a quiet comfortable environment with few distractions so it's ideal if you suffer sensory noise and light overload.
Seeing a child's literacy skills improve is so rewarding and it literally changes their and your life for the better. If you change the life of one child, you change the world.
Sending you a big hug.
Granny Aggie x