21.   Most of the tutors are certified teachers who volunteer from their homes in the evenings.

22.   North Carolina has the most nationally certified teachers.

23.   School officials say they prefer to hire properly certified teachers because they are typically better-trained in their field than other teachers.

24.   Richards said that any experiments in charter schools under her would entail restrictions against religious indoctrination as well as requiring certified teachers.

25.   Shortages of certified teachers have led to many subjects being taught by underqualified teachers.

26.   Skeptics question whether nationally certified teachers are really better.

27.   So is an impending shortage of certified teachers.

28.   Southern states, they say, lead the nation in pre-school education, nationally certified teachers and federal research and development funding.

29.   Such schools are not required to hire certified teachers, although most still do.

30.   The analysis also found that the shortage of properly certified teachers was more acute in some courses, such as bilingual education and computer classes.