English: There are four primary education service area offices (PESA) in Nakhon Si Thammarat Province, as illustrated, responsible for primary schools affiliated with the Office of Basic Education Commission of Thailand (OBEC).
Nakhon Si Thammarat PESA 1 (blue) covers districts of Mueang Nakhon Si Thammarat, Chaloem Phra Kiat, Lan Saka, and Phra Phrom.
Nakhon Si Thammarat PESA 2 (yellow) covers districts of Bang Khan, Chang Klang, Chawang, Na Bon, Phipun, Tham Phannara, Thung Song, and Thung Yai.
Nakhon Si Thammarat PESA 3 (green) covers districts of Cha-uat, Chian Yai, Chulabhorn, Hua Sai, Pak Phanang, and Ron Phibun.
Nakhon Si Thammarat PESA 4 (red) covers districts of Khanom, Nopphitam, Phrom Khiri, Sichon, and Tha Sala.