Henry Barthes is a highly recommended substitute teacher, a compliment he doesn't really accept. His latest job is subbing at an inner city high school for a month, where exam grades are slipping; the pupils are unruly and the head teacher is under fire for the decline in standards there.
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Take a look back at October's inaugural event.
The film is expected to continue without Mendes' involvement.
Is a Gallagher reunion on the cards for the future?
The unlikely franchise took over their Halloween night.