“…(Sipes & Sipes, 1998, pp. 159-162) Studies of twins in different countries have reported various rates of twin school separation with 31% of twins in the United Kingdom (Twins and Multiple Births Association, 2009), 19% to 48% of Dutch twins (Polderman et al, 2010;van Leeuwen, van den Berg, van Beijsterveldt, & Boomsma, 2005), 23% to 60% of Australian twins (Gleeson, Hay, Johnston, & Theobald, 1990;Staton, Thorpe, Thompson, & Danby, 2012), and 80% to 84% of American twins (National Organization of Mothers of Twins Clubs [NOMOTC], 2010;Segal & Russell, 1992) placed in independent classes. Parents of twins have reported that while some principals are willing to accept joint classroom placement requests, many principals favor class separation and some set strict twin separation policies (NOMOTC, 2010;Preedy, 1999;Segal & Russell, 1992;Twins & Multiple Births Association, 2009).…”