Calculate a personal reading rate using a simple words-per-minute method, and set a concrete stamina goal for sustained silent reading.
Reading speed and reading stamina are two different things worth measuring separately. Speed is how many words you read per minute during a short, focused stretch. Stamina is how long you can sustain focused silent reading before your attention genuinely drops off. Both are trainable, and both are far easier to improve once you have an honest starting number instead of a guess.
Measuring words-per-minute (WPM) takes three simple steps: count the exact number of words in a passage, time exactly how long it takes to read it at a normal, comprehending pace, then divide the word count by the number of minutes. Reading a 300-word passage in two minutes gives a rate of 150 words per minute. Stamina is measured differently: simply track, over several sessions, how many minutes of silent reading you can sustain before you notice your focus genuinely drifting.
Mastery looks like: They can calculate their own reading rate using the count-time-divide method and track a stamina trend honestly across multiple sessions.
Common stumbles: Reading as fast as possible without real comprehension when measuring speed, which produces a number that does not reflect genuine reading ability.