The Teachers' Registration Council of Nigeria (TRCN) on Tuesday in Abuja said it had repeatedly warned states against totally relying on corps members to teach in schools as it was partly responsible for the poor performance of students in public examinations.
Registrar of the council Professor Addison-Mark Wokocha said, "I have been complaining about the practice of many state governments sending all youths corps members deployed to their states to the classroom, not minding whether they read education or not.
"They cause considerable damage, intellectually to these students and at the end they fail and you will start blaming the examination bodies. I think the right step is to ensure that qualified teachers are recruited to teach these students."
Wokocha tasked institutions of learning in the country to adhere to professional standards in the discharge of their duties.
He said applying standards in the profession had become necessary due to the poor performances of students in examinations.
According to Wokocha, it is unfortunate that when the results are released, people tend to blame the examination bodies without looking at those that write the exams.
He said that the council had developed, produced and launched a comprehensive document on professional standards for Nigerian teachers in the country.
Wokocha said that copies of the document on standards had been distributed to all universities, colleges of education, polytechnics and others.
He said that the council had established teachers' investigative panel in all the states of the federation.
He said the panel was made up of five people one of whom should be a lawyer, adding that members of the investigative panel had been sworn in by the chief judges of the states.
"We also have the teacher's tribunal at the headquarters and the attorney general in the ministry of justice has an assessor representing him.
The registrar explained that the council also had a code of conduct for teachers, which he said, had been published and circulated.