We present PECSOnline, a Picture Exchange Communication System (PECS) tailored to meet the specific needs of classroom environments rather than an individual. To ensure the tool would meet the practical requirements of the classroom, we employed a participatory design approach, which involved input from educators of children with autism. Our focus was on developing an application that would be personalised and cater to multiple users, a feature that has not yet been tested in a classroom setting. We conducted a pilot test of our application, and the response from teachers of children with autism was overwhelmingly positive.