ABC-Schütze

Etymology
From, of uncertain origin, 16th c. The word Schütze might refer to the lowest army rank, possibly in part because school starters are often made to walk in rows of two and, generally, are treated like incompetent beings similarly to military recruits. Alternatively, from incorrectly interpreted as related to.

Noun

 * 1)  first-year pupil; child who has just started school; abecedarian