A group of GCSE pupils needed emergency coaching for an exam after being taught the wrong material for a year.
Emmanuel is one of the top state-funded comprehensive schools.
The 15-year-olds, 22 of the brightest pupils at Gateshead's Emmanuel College, were taking the English Literature exam a year early.
College principal Jonathan Winch said they had been taught about the right poets, but the wrong poems.
He said he was confident the day-long intensive study session left them fully-prepared for the 25 May exam.
During the session, the students were taught the correct poems, by World War I poets Wilfred Owen and Siegfried Sassoon.
Mr Winch said: "We regret that a group of early-entry GCSE English Literature students was initially prepared for an incorrect selection of World War I poetry, from a choice of two selections available.
"Once the error was discovered, action was taken immediately to give the students an intensive study period before they took their exam.
"Students have access to the full text of the poems during the paper and the skills they have been taught throughout the course are generic ones, thus they were fully prepared for the exam."
Mr Winch added that the college was one of a number of schools in England where the mistake had occurred and said he was standing by the teacher who made the error.
He also said he was confident that all the pupils would pass the exam with A or A-star grades.
Emmanuel College has a strong Christian ethos and is consistently in the top 12 of state-funded comprehensive schools in England.
However, it has courted controversy by teaching Biblical creationism alongside evolutionary theory.