The primary argument for the inclusion of "And Tango Makes Three" and books like it, ones that strive to introduce children to the subject of homosexuality in an appropriate and accessible way, is to foster inclusivity for children in same sex families. Literary critics have explored the values of "And Tango Makes Three" mainly because of its use in classrooms. Jennifer Harvey, a Curriculum Librarian and Assistant Professor at Calvin T. Ryan Library, University of Nebraska at Kearney, wrote that the book's diverse makeup and its subsequent lessons adds to its overall value. Harvey states that "since families vary, literature that explores types of families can improve the chances of the reader having a healthy response to non-normative family units, whether their own, or the family of an acquaintance." The inclusion of two male parents is reflective of a typical upbringing in American culture, and Harvey believes that addressing this is beneficial for a classroom setting. Indeed, she argues in favor of the book because it "can increase the likelihood of compassion for difference." Harvey notes that "Institute of UCLA’s School of Law has estimated that a quarter of all same-sex households include children under eighteen. This distribution suggests that children are likely to be aware of families where the parents are same sex. In the event that they do not encounter a family with same-sex parents, they will likely know children raised in families not made up of the child’s biological parents." She contends that families are becoming more diverse and that books like "And Tango Makes Three" help introduce the subject to children while also fostering a more accepting generation.