This study investigated the effect of text size and spacing on the reading speed and accuracy of children age five to eleven. Reading accuracy was significantly higher with large versus small text size. There was a similar direct relationship between reading speed and text size for children five to seven years old.
Typography in children's reading schemes may be suboptimal: Evidence from measures of reading rate
Journal of Research in Reading, 23(3), 314
IDEA Disability Category:
major-other health impairment
specific learning disability
speech or language impairment
multiple formats of text and notation