The superintendent of a county school of detention shall keep a complete record of children committed thereto, containing the name, address and age of each child, cause of detention, time of detention, offense alleged to have been committed if any, and any other useful data or information the juvenile and domestic relations court may direct to be kept. He shall also keep a record of all expenditures made by the county for the care and maintenance of the school.
He shall make a report to the board of chosen freeholders between the first and thirty-first of December in each year containing an itemized statement of all such expense necessary to maintain the school and the number of inmates during each month.
The juvenile and domestic relations court at any time may require the superintendent to furnish information concerning the conduct, maintenance or inmates of the school.