Latest presentation from the Transforming Assessment series of webinars, run by the University of Adelaide. This webinar is presented by Brynn Hibbert and Douglas Duffy (University of New South Wales, Australia) and Rosanne Quinnell (University of Sydney), who discuss using Open Source and Open Access Electronic Laboratory Notebooks (ELN) for web based collaborations in undergraduate science experiments. Enabling global scientific experiments and peer assessment, the webinar covers some challenges which include parity when assessing across international boundaries, benchmarking assessment practice across different Universities, assessments with no 'right' answer and privacy vs open access feedback.