also: かっか
noun
each subject; every department
Refers to individual subjects in a school curriculum or departments in an institution. Often used in educational or organizational contexts.
各科の試験日程を確認してください。
Please check the exam schedule for each subject.
病院では各科の専門医が連携している。
At the hospital, specialists from each department work together.
各教科 is more specific to school subjects, while 各科 can also refer to departments or fields in a broader sense.
Compound of 各 (each) and 科 (subject, department). The reading かっか is a result of gemination (促音便) of かくか.