Top ClassSeries 1Episode 12: Quarter-Final FourCBBCFirst broadcast: Tue 27th Sep 2016, 15:55 on CBBC ChannelLatest broadcast: Tue 5th May 2020, 12:40 on Red Button OneQuiz show. In this quarter-final, St Martin's Church of England Primary School from Somerset take on St Pius X Preparatory School from Lancashire.ContributorsExecutive Producer:Simon MarshDirector:Tony Grech-SmithPresenter:Susan CalmanGenresChildren'sFactualFormatsGames & QuizzesBrandTop ClassSeriesTop Class: Series 1 Source: BBC Online