A new report says North Carolina teachers are tops when it comes to national accreditation. The National Board of Professional Teaching Standards says more than 23 thousand North Carolina teachers hold a national accreditation. That is about a quarter of all our teachers and it is the highest in the country. They say North Carolina teachers account for nearly 20 percent of all teachers in the country with the certification. By the way, North Carolina teachers with that certification automatically get a 12 percent pay increase.