A number of post-primary schools in xo Omagh have voiced concerns about how some GCSEs will be awarded in 2021/22.
Some schools in the Omagh Area Learning Community have written a joint letter to the Northern Ireland exams board CCEA detailing a number of issues.
Due to disruption caused by the pandemic, pupils will not be examined on parts of courses in many subjects.
CCEA said it had to balance reducing assessments for pupils with ensuring qualifications retained credibility.
But the schools said some CCEA decisions on what should be omitted are "unfair" on pupils.
Some experts and teachers had already questioned why "speaking" units had been dropped from all language qualifications.
That means that pupils will not be tested on how they can speak French, Irish, German or Spanish to gain GCSEs, AS or A-levels in those languages in 2022.
But the letter from the schools in Omagh raises a number of additional concerns in GCSE Science, English, Maths and Geography.