21. Attended school (in months).
224. Column 21. - Attended school (in months). For all persons attending school during the year ending June 1, 1900, enter the number of months (or parts of months) of school attendance, as 9, 8, etc. If a person of school age did not attend school at all during the year, write "0." For all other persons to whom the inquiry is applicable, leave the column blank.