The Socialist Union of Education Workers (French: Centrale du Personnel enseignant socialiste; Dutch: Centrale van het Socialistisch Onderwijzend Personeel, CSOP) was a trade union representing workers in the education sector in Belgium.
[1] In 1924, it was joined by the Independent Trade Union of Education Workers in Antwerp.
[2] It also affiliated to the Teachers' International Trade Secretariat, and by 1935, it had 5,500 members.
[3] In 1937, it transferred from the SK to its successor, the General Labour Confederation of Belgium.
[1] It ceased to operate during World War II, but various branches survived, and in 1942 they merged into the new General Association of Public Services, which soon became part of the General Union of Public Services.