The International Particle Physics Outreach Group (IPPOG) is a network of scientists, science educators and communication specialists working across the globe in informal science education and outreach for particle physics. The IPPOG Collaboration comprises 30 members: 24 coun- tries, 5 experiments and CERN as an international laboratory. We will report on current activities, including the continued growth and development of the International Masterclasses on Particle Physics programme, the outreach resource database, support for exhibitions and activities at pub- lic events and festivals, and topical programmes targeting young and diverse audiences. We will also discuss the strategic necessity of education and outreach to gain long-term public and stake- holder support for the field of particle physics, both in the context of the European Particle Physics Strategic Update (EPPSU), and in general for our society.