CERN is pleased to announce the fifth edition of the Beamline for Schools competition. Groups of physics students are invited, along with their teachers, to research and propose an idea for an experiment that can be conducted using a CERN accelerator beam. Two winning teams will be invited to CERN to carry out their proposed experiments on a fully equipped beamline. The competition is open to teams of high-school students from all over the world. The 2018 competition is made possible thanks to the Arconic Foundation supporting Beamline for Schools (BL4S).