課員 is read as かいん (kain) and means section staff.
かいん
kain
かちょう
section manager
かだい
homework
かぜい
taxation
か
counter for lessons and chapters (of a book)
かてい
course
かする
to impose (a tax, fine, etc.)
かがい
extracurricular
かす
かちょうだいり
deputy manager
かがいかつどう
extracurricular activities
かきんせい
rate structure
かきんどうさゆうこうきかん
accounting regime