The Simeon Adebo Staff Development Centre (SASDC) formerly known as Civil Service Training School has its origin in the Clerical Training School, Osogbo. It was the first of its kind in the country at that time.
It was set up for the purpose of Training Office Assistants, such as Clerical Officers and Typists in the Public Service. The clerical Training School at Osogbo was disengaged due to the need for a higher institution which requires more dynamic training activities. Therefore, the Civil Service Training School Ibadan started in March 1958, with an in-take of 13 (thirteen) students on its first ever Basic Secretarial Course.
In 1959, the school was formally declared open by the then Minister of Education, Chief Jonathan Odebiyi and the permanent building was located within the Oyo State Secretariat. The school took a stride forward in 1960, when it started to train clerks and to run induction courses for junior and middle level officers. Later introduced into its curriculum, the training of Local Government Personnel. It continued to run basic courses in Secretarial Studies, train other categories of office assistants including messengers and storeman. It also conducted training programmes for Senior Administrative and Personnel Officers.
In 1989, Late Colonel Sasaenia Adedeji Oresanya, the then Military Administrator of Oyo State, upgraded the Centre. This was done to enhance the capability of all categories of staff, including senior and middle level officers in the public services as the private sector for improved productivity. The upgrading empowered the Centre to organize training programmes for officers on the top echelon of the civil service, local government and the private sector.
The Executive Council of Oyo State in 1994, approved the change of name of the Centre to Simeon Adebo Staff Development Centre in honour of Late Chief Simeon Olaosebikan Adebo, the first indigenous Secretary to the Premier of the Old Western of Nigeria, in realization of his laudable contributions to the region.
In the year 2002, the restructuring and upgrading of the Centre was backed up with Edict No. 1 of Oyo State thereby enlarging the scope of operation of the Centre.