English: There are two primary education service area offices (PESA) in Chachoengsao Province, namely Chachoengsao PESA 1 and Chachoengsao PESA 2, as illustrated, responsible for primary schools affiliated with the Office of Basic Education Commission of Thailand (OBEC).
Chachoengsao PESA 1 covers districts of Mueang Chachoengsao, Ban Pho, Bang Nam Priao, and Bang Pakong.
Chachoengsao PESA 2 covers districts of Bang Khla, Khlong Khuean, Phanom Sarakham, Plaeng Yao, Ratchasan, Sanam Chai Khet, and Tha Takiap.