Excellent. I remember we learned to read and write in one month in Finnish school. If this did not happen, one was officially classified as retarded (in 1950s)

Excellent. I remember we learned to read and write in one month in Finnish school. If this did not happen, one was officially classified as retarded (in 1950s). How long it takes average american to achieve errorfree skills? Grok:... In USA on average, achieving consistent error-free literacy might take 4-6 years of schooling (kindergarten through fourth grade), but this varies widely.