They are still demanding the revaluation and not re-checking of answer-sheets. Parents have alleged that correct answers have been marked wrong and, accordingly, re-checking has only considered the zero marked against the answer.

The Parent's Forum for Meaningful Education alleges that the fault lies in the marking scheme itself. ``We have been asking for revaluation for years now,'' says Kusum Jain, a member of this forum. ``CBSE has only shown us the answer scripts. What really needs to be shown is the marking scheme. The fault lies there as the examiners are correcting the answer scripts based on wrong marking schemes.''

After select schools and parents took up the issue of students scoring low marks in the board examinations, the CBSE, in an effort to rebuild the image of the country's largest board system, showed some answer-sheets to a few persons on Tuesday.

``We were shown the answer-sheets of students we felt deserved better marks. For instance, there were a couple of my students who are very bright and always did well in school,'' says Suraj Prakash, principal of CRPF School.

``But I think the CBSE's decision to show us some of the answer-sheets was a welcome step and it satisfied most of us.'' On the other hand, Shyama Chona, principal of Delhi Public School (Mathura Road), says, ``I am fed up now.''The process of showing select answer-sheets to parents and teachers started with checking whether these belonged to the students concerned. For the few parents who were unsure about this, all doubts were cleared when the student himself or herself identified the script. However, not many people were happy with what they saw.

CBSE officials, however, clarify that they have been very ``meticulous'' in handling the entire process. They add that every year the board tries to make the system more transparent and this time they got an instant feedback after each examination.

``A group of experts gave an overview of the question paper and this feedback was given to the examiners,'' says Dr K.D. Sharma, controller of examination. ``We also have people overseeing that the marking scheme is followed during evaluation.''

Apart from this, the CBSE has the Outlier System, wherein in case of a discrepancy in any one paper of a student, an average of all the other four subjects is taken into account and the paper re-checked.

But these systems have not convinced various parents' organisations and schools. According to Dr R.M. Kohli, convenor of the National Council for Academic Values, the answer-sheets of those who have obtained 75 per cent marks in four subjects should be revaluated. He adds that an expert committee should be formed for all subjects and it must take into account the views of parents, students and teachers.

``We have already formed a committee that is overseeing the re-checking process,'' says B.P. Khandelwal, chairman of CBSE. ``It is not feasible for the board to show all the answer-sheets. We just showed a few to try and say that the system does function.''