the main characters of M.I. High, leaflets were sent out to schools and over a thousand kids were seen, from which director Toby Haynes had to choose the main characters. When auditions for the part of Daisy Miller took place, there were a hundred children that day to audition. Bel Powley was in the middle of the crowd looking around and she caught Haynes's eye when she was sitting down on the floor and he thought she had confidence, which was exactly what he was looking for. Rachel Petladwala heard about the audition through the leaflet that was read out in her assembly. She and her friends thought they might as well have a go and when she got the part she was astonished. In the audition for Rose Gupta the actress noticed that " Deoxyribonucleic acid (DNA)" was spelt wrong in the script and informed Haynes, who immediately decided she was right for the role. The main challenge, according to Haynes, was taking school children and turning them into actors, so they were given acting coaching before filming began. Series 6 Oscar Jacques was confirmed to be playing Tom Tupper; the actor went to six auditions before he was told by the producer that he got the part. In June 2012, Paul Bamford was announced to be playing student Roly. Series 7 It was confirmed that two new students would be introduced for the seventh series: Megan McGill was cast as Lady J, and Sandy Bain was cast as Preston. Filming Filming for series four and five was confirmed to be located at Selhurst High School in Croydon. The cast of series four Rachel Petladwala, Charlene Osuagwu and Ben Kerfoot reprised their roles. Producer Emma Kingsman-Lloyd said: "Filming at this location was such a success last year that we knew we wanted to return to film series 5." She also went on to say “The location of the school near to Croydon town centre has meant that we're ideally situated near to shops and banks and it also has a wide variety of locations – parks, streets and cafes ;– nearby so we never have to travel very far to find locations for the scenes we film off site. “But perhaps best of all, Selhurst School only closed last year and has been well maintained since so it's brilliant." Cast Main Frank London (Saint Hope's / Saint Heart's Caretaker