A failing school is borrowing teachers from another school and sending out disruptive pupils while it is inspected by Ofsted.
Hull has the worst GCSE rate in England
The action by Endeavour High School in Hull has been defended by the local council, which says it is part of a collaborative approach by schools.
Teachers at the school are reported to be angry about the arrangements made for the inspection next week.
Eight teachers have been drafted in from other schools in the area.
A number of pupils will be away at a local college for vocational training for four days next week as part of a scheme to "rekindle their interest in learning".
Kevin Beaton, head teacher of Kingswood High School in Hull, took over responsibility for a temporary management team at Endeavour High School about a month ago.
This followed the resignation of head teacher David Throp.
Hull City Council says the arrangements are not unusual.
A spokeswoman said: "There is a well-established practice in Hull for schools to work collaboratively.
"A number of teachers have been drafted in as part of the improvement programme.
"A number of pupils attend college courses which are designed to engage them and rekindle their interest in learning.
"A number of pupils from Endeavour and other schools are benefiting from this more flexible approach."
Ofsted inspectors say they will take into account the special arrangements being made.
A spokesperson said: "The inspection team will be gathering evidence from a number of sources both before and during the course of the inspection.
"This will enable any concerns about the removal of pupils and teachers to be brought to the attention of the team.
"Therefore it will not just be lessons observed during the inspection which will determine the judgments reached by the inspection team."
Ofsted recently announced plans to cut the notice time given to schools before inspectors arrive.
At the moment, schools may know an inspection is going to take place 10 weeks in advance, but in future might get as little as two days' notice.
Schools in Hull are at the bottom of England's national GCSE league, with an average of only 31% of pupils gaining five or more good GCSEs or equivalent vocational qualifications.
Endeavour school was formed in 2001 from two others.
Last year only 17% of pupils there got five good GCSEs or equivalents and the year before, only 11% did.
Its truancy rate is almost four times the national average.