Last-minute changes to exam results announcements should have been avoided.
Leora Cruddas, chief executive of the Confederation of School Trusts said: "Pearson has rightly written to schools and colleges to say that their priority is to ensure fair outcomes for BTEC students in relation to A Levels and GCSEs and that no BTEC student is disadvantaged.
"However, this late notification will cause very significant challenges for schools, trusts and colleges. It is simply unacceptable that some of the most disadvantaged students will not receive their grades tomorrow and that nothing has been done to correct this over the past few days.
"Teachers and leaders will do everything they can to be the voice of reassurance and support tomorrow and to help young people secure places at the college, apprenticeship provider or employer of their choice.
"I am certain that sixth form and further education colleges, apprenticeship providers and employers will exercise leniency and flexibility in working with schools and colleges to make this happen.
After all the confusion of the last week, this situation could and should have been avoided.”
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