This is the most critical and most commonly ignored rule. If you allow backspace during practice, your fingers develop a reflex to reach for it after every error. In the actual AP HC exam, that reflex costs you rhythm and focus every time it fires — because backspace does nothing. Force yourself to type forward from the very first practice session. It feels uncomfortable for the first week and transformative by the third.

If you already know Hindi InScript, you have a small advantage — the base key positions share the same vowel and consonant mapping logic. But Telugu has unique characters (ళ, ఱ, and various conjunct forms called "ottulu") that don't exist in Hindi. More importantly, formal court Telugu uses grammatical constructions that differ sharply from casual written Telugu. Treat this as a new language skill. Print an InScript Telugu keyboard chart, keep it beside you for the first two weeks, and never look at the keyboard during timed sessions.

Legal vocabulary is the silent speed-killer in this exam. When you encounter "interlocutory application" or "suo motu cognizance" for the first time mid-test, your eyes pause, your rhythm breaks, and your fingers hesitate. Reading one short judgment excerpt in English and one AP district court order in Telugu each day during your preparation period will make this vocabulary feel natural. You won't type faster overnight, but you'll stop slowing down for unfamiliar words — which is almost the same thing.

The official cutoffs are 35 WPM English and 30 WPM Telugu. But exam-day conditions — an unfamiliar keyboard, a new typing chair, noise, other candidates, and the pressure of the real thing — will cost you 3–5 WPM compared to your practice speed. If you're barely hitting the cutoff in relaxed practice, you will not pass on exam day. Set your daily practice targets 3–5 WPM above the official minimums. When you consistently hit 38 and 33 with clean accuracy, you are genuinely ready.

A common preparation mistake: candidates spend all their time on their weaker language and stop practicing the stronger one — only to find it has regressed by exam day. One 10-minute English session in the morning and one 10-minute Telugu session in the evening is far more effective than a single 20-minute block of one language. The contrast between the two keyboard layouts actually reinforces accuracy in both — you become more deliberate with each key because you know the wrong one sends the wrong character.

Net WPM = (Total Words Typed − Error Words × 2) ÷ Minutes. At 35 WPM over 10 minutes, you type roughly 350 words. With 6 error words, your net drops to (350 − 12) ÷ 10 = 33.8 WPM — below the cutoff. Since backspace is off, those 6 errors cannot be fixed. This is why accuracy matters more than raw speed. Slowing down by 2 WPM and cutting errors from 6 to 2 will raise your net score by nearly 3 WPM. Do the math in your own practice sessions and adjust your approach accordingly.

Two-finger typists almost never reach 35 WPM with high accuracy consistently across a 10-minute session. For English, learn and use the standard home-row ASDF-JKL; position. For Telugu InScript, memorise which finger controls which key group and never deviate. The initial slowdown when switching to proper touch typing technique is temporary — usually 2–3 weeks. After that, both your speed and accuracy will surpass whatever you achieved with informal technique, and will keep improving naturally.