The ATLAS Collaboration provides a range of outreach and education opportunities appropriate for classroom engagement with particle physics developed by the ATLAS Collaboration at the LHC. Here we present details of the exhibits/features and use of the new ATLAS Visitor Centre at CERN – the most visited external visitor site at CERN – as well as an overview of the highly-successful Virtual Visit programme bringing CERN and the ATLAS experiment to tens of thousands of people. We also present an overview of ATLAS contributions to international Masterclasses and showcase resources such as “Cheat Sheets” and “Fact Sheets”, which are intended to cover key topics of the work done by the ATLAS Collaboration and the physics behind the experiment for a broad audience of all ages and levels of experience. This contribution will also present some
of the efforts to make visits and available resources more inclusive and accessible to a wider and
more diverse audience.