Outreach. Presenter. Every year the world celebrates International Clinical Trials Day on May 20th. This event marks the anniversary of the first well-documented randomised clinical trial which took place in 1747 in the British Navy. The Health Research Board � Trials Methodology Research Network (HRB-TMRN) celebrates this important occasion with the help of the younger members of our community. We invite primary school students in 4th, 5th 6th classes to lead on an exciting project and create their very own fun randomised clinical trial in the classroom. Primary school students are invited to recreate their very own randomised trial, following the resources provided.