If you have any questions or inquiries about employment at ISD, please email human.resources@iaedb.org or call 712.366.3283 (voice) or 712.250.6849 (videophone). School Psychologist. Primary Function. The School Psychologist provides services in support of Iowa School for the Deaf’s mission which is to prepare deaf and hard of hearing students from pre-school to age 21 for life as literate citizens who contribute in society. The School Psychologi...