Average Reading Speed by Age and Grade Level Grade Level and AgeWords-Per-Minute 3rd Grade (Spring) 8-9 years old107 – 162 wpm 4th Grade (Spring) 9-10 years old123 – 180 wpm 5h Grade (Spring) 10-11 years old139 – 194 wpm 6th-8th Grade (Spring) 11, 12, 13, 14 years old150 – 204 wpm 5 more rows