Whenever requested by the board of education of the school district in which a private school is located, if not more often than once per month, the person or corporation in charge and control of any school other than a public school shall certify in writing, and, if so requested, upon forms or blanks furnished by the said school district for that purpose, a statement containing the name, age, place of residence, and number of days of attendance at school during the preceding month or since the preceding report of all children of school age who then are or since the preceding report have been attending any such school.