Creates the Classification by Biological Sex Act. Sets forth findings. Provides that any public school or school district and any State, local agency, department or office that collects vital statistics for the purpose of complying with antidiscrimination laws or for the purpose of gathering accurate public health, crime, economic, or other data shall classify each individual who is part of the collected data set as either male or female at birth. Amends the Statute on Statutes. Sets forth the meaning of the following terms as used in any statute or any rule or regulation: a person's sex; female and male; woman and girl; man and boy; and mother and father.