An Ikastola (, plural ikastolak) is a type of primary and secondary school in the Basque Autonomous Community, Navarre and (to a much lesser extent) the French Basque Country (see Basque Country) in which pupils are taught either entirely or predominantly in the Basque language. Ikastolak can be nowadays either private or public, divided into different networks.
The Basque language public network relies on state funding and management, allocated in Spain by the education institutions of the Basque Autonomous Community and Navarre in their corresponding territories, while in France the association Ikas-Bi in the public network advocates for bilingual education. Seaska is the private network of Basque language schools in the French Basque Country, closely linked to the similar network in the Southern Basque Country. The private networks base their activity on the fees paid by parents, popular subscription (either directly or by means of annual massive festivals, e.g. Herri Urrats, Nafarroa Oinez, Araba Euskaraz, etc.) and the allowance provided by public educational institutions.