A-grade; first-class
Used in grading systems (e.g., exams, licenses, products) to denote the top category. Often contrasted with 乙種 (second class) and 丙種 (third class).
See also: 甲乙丙 (こうおつへい)
He holds a Class A hazardous materials handler license.
Passing this exam earns you a first-class certificate.
This hazardous material is classified as Grade A.
He passed the exam for the Grade-A hazardous materials handler certification.
甲種 is the top (A) grade in a classification system, while 乙種 is the next grade down (B), one rank below it.
甲種 is the highest classification, while 丙種 is the lowest of the three ranks (甲・乙・丙) in the same system.
passing the physical exam as a Grade One conscript (former Japanese military)
Compound of 甲 (first, A) and 種 (kind, class). The kanji 甲 originates from the first of the ten celestial stems, used for ordering.