Master the craft of umpiring a baseball game — the NFHS umpires-manual mechanics that separate knowing the rules from working the game. Learn the plate umpire's stance, tracking, and strike-zone timing; the base umpire's starting positions and how they change with runners on; the two-umpire system and who takes which calls; the signals (strike, out, safe, fair, foul, dead ball, the infield-fly call, and the count); pause-read-and-react timing on a play; fair/foul and catch/no-catch coverage; tag-up and appeal responsibilities; and pre-game and plate-meeting duties. Each question teaches the mechanic and names the classic error (calling too quickly, the wrong starting position, missing a pull or a swipe tag). Authored from the public NFHS baseball umpires manual using original questions — never real exam items — and stamped to the NFHS high-school code. Keentune is independent study practice, not affiliated with or endorsed by the NFHS, MLB, the NCAA, or Little League, and does not guarantee a pass. Educational only.