The Department of Education has confirmed that 12,292 students have sought rechecks of their calculated Leaving Certificate grades.
The appeals are in respect of 33,677 grades.
Students had until 5pm yesterday to lodge an appeal.
Appeals will not deal with the difference between the marks given by a school and the grade ultimately awarded by the Department of Education.
The appeal could only be made in respect of errors in the transmission and processing of student data.
Students who are unhappy with their results still have the option of sitting the Leaving Cert on 16 November.
However, details on how this exam will take place have yet to be finalised.
The student claims that the marks she was awarded under the standardisation process are not an accurate reflection of what she achieved in three subjects in which she was downgraded