History of National Teacher Day
The origins of National Teacher Day are murky. Around 1944 Arkansas teacher Mattye Whyte Woodridge began corresponding with political and education leaders about the need for a national day to honor teachers. Woodridge wrote to Eleanor Roosevelt, who in 1953 persuaded the 81st Congress to proclaim a National Teacher Day.
NEA, along with its Kansas and Indiana state affiliates and the Dodge City (Kan.) Local, lobbied Congress to create a national day to celebrate teachers. Congress declared March 7, 1980 as National Teacher Day for that year only.
NEA and its affiliates continued to observe National Teacher Day in March until 1985, when the NEA Representative Assembly voted to change the event to Tuesday of the first full week of May.
Excerpt taken from NEA National Teacher Day article