Construction of the foundations of Polish school authorities within the future Silesian voivodeship started in the course of military and diplomatic struggle for the nationality of this region. Granting the autonomy to the part of Upper Silesia, which was to provide votes in the plebiscite according to the drafters of the act, led, beside many other consequences, to the development of a separate school system. One can discuss the Silesian specificity in this field in respect of two levels. During the interwar period, the differences between organization of the school authorities in the Silesian voivodeship and the rest part of Poland were more noticeable. The consequences arising from the autonomous status of the Silesian voivodeship played here a pivotal role. As a result of the autonomy, the Silesian Parliament was established, which by issuing a series of school-related laws was gradually detaching the model of Silesian educational authorities from the nationwide regulations. The second consequence of the impact of autonomy on the system of Silesian educational establishments resulted in no automatism of the validity of laws passed by the Sejm of the Republic of Poland in the Silesian voivodeship. Thus, the Act on Temporary School System of 1920, which through shaping nationwide relations implemented regulations distinct from those of Silesia, was not effective.