The Texas Education Code (TEC) 38.003 defines dyslexia in the following way:
"Dyslexia" means a disorder of constitutional origin manifested by a difficulty in learning to read, write, or spell, despite conventional instruction, adequate intelligence, and socio-cultural opportunity.
Primary characteristics of dyslexia are as follows:
Difficulty reading words in isolation
Difficulty accurately decoding unfamiliar words
Difficulty with oral reading (slow, inaccurate, or labored)