English: There are two primary education service area offices (PESA) in Nong Khai Province, namely Nong Khai PESA 1 and Nong Khai PESA 2, as illustrated, responsible for primary schools affiliated with the Office of Basic Education Commission of Thailand (OBEC).
Nong Khai PESA 1 (blue) covers districts of Mueang Nong Khai, Pho Tak, Sa Khrai, Sangkhom, Si Chiang Mai, and Tha Bo.
Nong Khai PESA 2 (yellow) covers districts of Fao Rai, Phon Phisai, and Rattanawapi.