In theory, anybody can use the Picture Exchange Communication System as it was designed to be used by a wide variety of people, including parents, teachers and others.
In practice, there are a number of organisations which can provide training and materials.
PECS does not require professional qualifications or credentials as it was designed to be used by a wide variety of people, including parents, teachers and others. However, according to Vicker (2010),
“Professional training regarding PECS is required in order to implement the program as designed. Generally the training is provided at a two-day workshop. While speech pathologists might be the primary PECS program coordinator for a specific child, it is helpful to have others also attend the two-day trainings since they too will play an important role. These others could include parents, the classroom teacher, and classroom assistants. They will be important in identifying new vocabulary and may help construct some of the picture display symbols as well as provide the nonverbal individual with opportunities to use/learn the new vocabulary. Although many people receive their initial training from a Pyramid Educational Consultant, others may receive their training through a train-the-trainer model from a local individual who has had training beyond the two-day orientation and is certified to train others.”