Chakavian
Chakavian or Čakavian , , ( , proper name: "čakavica" or "čakavština" , own name: "čokovski, čakavski, čekavski") is a dialect of the Serbo-Croatian language spoken by a minority of Croats. It has a low mutual intelligibility with Shtokavian. There is much internal diversity, to the point where intelligibility between the northern and southern varieties of Chakavian is low. All three main Serbo-Croatian dialects are named after their most common word for "what?", which in Čakavian is "ča" or "ca". Chakavian is spoken mainly in the northeastern Adriatic: in Istria, Kvarner Gulf, in most Adriatic islands, and in the interior valley of Gacka, more sporadically in the Dalmatian littoral and central Croatia.
Serbian language in Croatia
Most schools with instruction in Serbian are located in Vukovar-Srijem and Osijek-Baranja County in the area of former Eastern Slavonia, Baranja and Western Syrmia where rights on education in minority languages were provided during the United Nations Transitional Administration for Eastern Slavonia, Baranja and Western Sirmium based on the Erdut Agreement. Today with those schools there is also Kantakuzina Katarina Branković Serbian Orthodox Secondary School in Zagreb.