肄 (w)

(yì) to learn; to practice or study (old)

肄业 (w)

(yìyè) to attend (a school); to drop out (of college etc)

肄业生 (w)

(yìyèshēng) dropout student

肄业证书 (w)

(yìyèzhèngshū) certificate of partial completion; certificate of attendance (for a student who did not graduate)