Write a specific, arguable claim about a real issue, avoiding claims that are simple facts or unsupportable absolutes.
A claim is different from a fact. A fact is checkable and not worth arguing ("many middle schools start around 7:45 a.m."). A claim takes a position a reasonable, informed person could disagree with. This unit you will write and defend a full op-ed, and everything starts with a claim strong enough to build nine weeks of writing on.
A nuanced claim avoids absolute words -- always, never, everyone, no one -- because one honest counterexample can sink an absolute claim instantly. Instead, a nuanced claim is precise about scope: what exactly should change, for whom, and why. Precision makes a claim harder to knock down, not weaker.
Mastery looks like: They write a specific, arguable claim about a real issue and can explain why it is not simply a fact.
Common stumbles: Writing a claim so broad or absolute ("everyone should always...") that a single honest counterexample defeats it instantly.