| Chapter | Student Champion | Email |
| Atlantic | Brian Phelan | phelanb@region.halifax.ns.ca |
| Austria | Joseph Klaffenbock | martinn@wellington.vic.gov.au |
| Australia | Martin Norris | pfeni@arbor-consult.com |
| Brazil | Jeremy Chancey | jtcgroup@attglobal.net |
| Czech Republic | David Hora | hora@zas-me.cz |
| Denmark | Tage Rønne | ravnehus@mail.tele.dk |
| Florida | Mike Marshall | ravnehus@mail.tele.dk |
| Germany | Carsten Venzke | post@anca-venzke.de |
| Illinois | April Toney / Fredric Miller | iaa@wi.rr.com / fmiller@jjc.cc.il.us |
| Indiana | Harvey Holt | holth@purdue.edu |
| Italy | Francesco Ferrini | francesco.ferrini@unifi.it |
| Kentucky | Bill Fountain | wfountai@uky.edu |
| KPB Dutch | Jelte Buddingh | jeltebuddingh@planet.ml |
| Michigan | Nancy Carpenter | mfpa@acd.net |
| Mid-Atlantic | Don Blair | quercusman@aol.com |
| Midwestern | John Ball | John_Ball@sdstate.edu< |
| Minnesota | Ralph Sievert | rsievert@minneapolisparks.org |
| New England | Marcia McPhee | mmcpheeisa@netscape.net |
| New Jersey | Gary Lovallo | Cte273@aol.com |
| New York | Matthew Mosher | mlmosher@adelphia.net |
| New Zealand | Mark Roberts | mark.roberts@horttraining.ac.az |
| Norway | Glen Read | glen@ab-trepleie.no |
| Ohio | Mark Hoenigman | treeguy@adelphia.net |
| Ontario | Randy Lidkea | hrmiata@rogers.com< |
| Pacific Northwest | Terry Flanagan | terry@teragan.com |
| Penn-Del | Russ Carlson | rcarlson@tree-tech.com |
| Prairie | D’Arcy Schenk | dschenk@wascana.sk.ca |
| Quebec | Ron Laurin | rlaurin@siaq.org |
| Rocky Mountain | Ray Daugherty | ray.daugherty@frontrange.edu |
| Southern | Christina Wells | cewells@clemson.edu |
| Spain | Jacobo Llorens | arbopalm@ono.com |
| Sweden | de Gouret Litchfield | tradvard@algonet.se |
| Texas | Courtney Blevins | cblevins@tfs.tamu.edu |
| UK/Ireland | Nigel Smith | nigel.smith@capel.ac.uk |
| Utah | Max Darrington | mld4@email.byu.edu |
| Western | Juan Barba | juanbarba@earthlink.net |
| Wisconsin | Richard Hauer | |