Dyslexia is a specific learning preference characterized by unexpected difficulties with literacy and numeracy skills despite a person's level of ability. Classic characteristics of dyslexia include phonological processing difficulties, variable performance, poor retention of previously learned reading and writing skills, and unexpectedly poor output for considerable effort. People with dyslexia often have strengths in creativity, higher-level thinking, and visual-spatial skills. Screening and adjusting teaching methods to be multi-sensory can help dyslexic students.