The thing every youth-sport parent wants — and the one most likely to be sold as a hack. "Faster" is an outcome, not a drill. Here's the honest chain that actually produces it.
Ask a training center "how do I make my kid faster?" and you get four sprint drills. Ask us and you get one sentence: master the foundations, and speed is the by-product. There is no "speed rep" — speed is the readout that rises when the blocks below it get built. So we don't hand you a speed hack. We point you down.
Faster is an outcome. It's made of these — build them to mastery and the child gets faster, without ever "training speed." This is the whole answer; everything else is detail.
Once the engine is there, tidy sprint mechanics let the child spend it — run tall, arms front-to-back, quiet feet under the hips. Useful polish, not the source of speed, and never a substitute for the blocks above. It's a handful of cues inside a game, not a program.
→ The run & sprint technique card (the cues, graded & safe). And skip the agility ladder — a memorised closed pattern is among the least transferable things you can drill; reactive tag/mirror games beat it.
Run & sprint cues: Gallahue developmental sequence (arm–leg opposition, evidence-based); Active for Life / Coaching Young Athletes (posture, elbow drive, quiet feet — coach-consensus) via MOVE-TECHNIQUE-LIBRARY.md. Engine & safety: FOUNDATIONAL-HACKS.md (reactive strength / landing / SSC), AAP 2020 (technique-first youth training is growth-plate-safe). Model: ARCHITECTURE.md — outcome vs. foundation.