English: There are three primary education service area offices (PESA) in Phitsanulok Province, namely Phitsanulok PESA 1, Phitsanulok PESA 2, and Phitsanulok PESA 3, as illustrated, responsible for primary schools affiliated with the Office of Basic Education Commission of Thailand (OBEC).
Phitsanulok PESA 1 (blue) covers districts of Mueang Phitsanulok and Bang Rakam.
Phitsanulok PESA 2 (yellow) covers districts of Bang Krathum, Noen Maprang, and Wang Thong.
Phitsanulok PESA 3 (green) covers districts of Chat Trakan, Nakhon Thai, Phrom Phiram, and Wat Bot.