W.6.1: Write an Argument with a Claim and Evidence
Also written as CCSS.ELA-LITERACY.W.6.1 · Cluster: Text Types and Purposes.
The Official Wording
Write arguments to support claims with clear reasons and relevant evidence.
Common Core State Standards, Grade 6, Writing · Read it at the source · Checked October 14, 2026
What W.6.1 Means in Plain English
A sixth-grade argument opens with a claim, like “School should start at 8:30,” then lines up its reasons. Each reason rests on evidence from a trustworthy source, linking phrases like as a result tie it to the claim, the voice stays formal, and the ending follows from the case.
Fifth grade (W.5.1) asks for opinions backed by facts. Sixth grade turns the opinion into a claim, requires credible sources and adds a formal style. Seventh grade (W.7.1) asks writers to acknowledge opposing claims and organize the evidence logically.
W.6.1 I Can Statements
- I can introduce my claim and organize reasons and evidence clearly.
- I can back each reason with relevant evidence from a credible source.
- I can link ideas with transitions, stay formal and end with a matching conclusion.
W.6.1 Worked Example
Both students had the same four sources. One built the argument on them; the other leaned on the only one a reader should not trust.
Should our middle school move its start time from 7:45 to 8:30? Write an argument with a clear claim, using evidence from at least two of these sources: a sleep researcher’s article explaining that the body clocks of most 11- to 14-year-olds shift later during puberty; our class survey, in which 58 of 84 sixth graders said they feel tired in first period; the attendance office’s count of 212 late arrivals in September; and an anonymous comment on a local news site that says “kids today just need to go to bed earlier.”
Common Mistakes with W.6.1
Every source treated as equal
An anonymous comment on a news site cited as if it were research
Try this: Teach three credibility questions (who wrote it, what do they know, how do they know it) and have students answer them for every source.
A chatty voice in a formal piece
“Honestly, waking up at 6 is literally the worst thing ever.”
Try this: Give students a list of informal words to hunt for (literally, totally, honestly, super) and have them replace each with a precise, formal choice.
Evidence dropped in without a link
“School should start later. There were 212 late arrivals in September. Teenagers have different body clocks.”
Try this: Have students write a linking clause after each piece of evidence, such as “which shows that,” connecting it back to the reason it supports.
Where W.6.1 Fits
Practice W.6.1
Quick Check
- Which two sources does the strong response use for its first reason?
- Why does the strong response leave out the comment from the news site?
- Find two places where the weak response breaks a formal style.