In this final episode of the series, the class and teachers return to school for their very own reunion party, where they are joined by presenter Sara Cox and social historian Polly Russell. As pupils, teachers and families celebrate together, they reflect on over 100 years of time travel and explore how the legacy of the past lives on in the schools of today. But their journey isn’t over yet, as our intrepid class of pupils set off to explore what the future of the classroom might look like. They experience the cutting-edge possibilities of virtual classrooms and contend with the unsettling notion of lessons run by artificial intelligence. As they relive some of their favourite memories, from school dinners to weird and wonderful lessons, they compare how their historical experiences measure up to the present and the future. Will a modern school dinner ever match the joy they felt when helping themselves to chips, pizza, waffles and mash in the 1980s? Can a cross-country run ever be less traumatic, even when accompanied by pioneering tech? And can a simulation really make 21st-century teens fall in love with their history lessons? Life-changing memories are shared, and before the end of the party, the class join together for one final school photo.