Greeley School fourth graders Sarah Baillos (from left), Charlie Acri and Jack Soehn check in with Jean Conway, a special education teacher, during an Ellis Island immigration simulation and family history unit at the school in Winnetka on Friday, Dec. 14

Greeley School fourth graders (from right) Charlie Acri, Will Armstrong, Camille Collins and Jake Martin wait inspection during an Ellis Island immigration simulation and family history unit at the school in Winnetka on Friday, Dec. 14, 2012. | Ryan Pagel

Suzanne Schwartz, a special education teacher at Greeley School in Winnetka, poses as a medical inspector for (from right) Mia Hales, Camille Collins, Jake Martin and Anna Furton during an Ellis Island immigration simulation and family history unit at the

Greeley School fourth graders Alex Holland (left) and Henry Armstrong work on a citizenship test during an Ellis Island immigration simulation and family history unit at the school in Winnetka on Friday, Dec. 14, 2012. | Ryan Pagelow~Sun-Times Media

Jean Conway (bottom right), a special education teacher at Greeley School in Winnetka, and Leslie Jenner, a secretary, check in fourth graders Katie Weiss, Taylor Daniels and Kate Dobsch during an Ellis Island immigration simulation and family history uni

Greeley School fourth grader Robbie Day passes through a simulated medical inspection with Gina Bakakos, a special education associate teacher, during an Ellis Island immigration and family history unit at the school in Winnetka on Friday, Dec. 14, 2012.

Greeley School fourth graders Charlie Fiori (from left), Mac Purcell and Emma Bhote pose as immigrants during an Ellis Island immigration simulation and family history unit at the school in Winnetka on Friday, Dec. 14, 2012. | Ryan Pagelow~Sun-Times Media

Greeley School fourth graders Colin Fox and Charlotte Ferguson pose as immigrants during an Ellis Island immigration simulation and family history unit at the school in Winnetka on Friday, Dec. 14, 2012. | Ryan Pagelow~Sun-Times Media