To evaluate sources for a school research project, check who produced the information, investigate that source outside its own website, trace important claims to their evidence, and decide whether the evidence fits your question. Save a short reason for using each source before you start writing.
A polished page can still be a poor source. A useful source also depends on your task: a newspaper report might help explain a public debate, while a science assignment may require the underlying study. Begin with your teacher’s requirements for source types, dates and citation style.
How to evaluate sources: a five-step routine
1. Write the question your source must answer
Turn your topic into a focused question. Instead of collecting anything about school uniforms, ask: “What evidence is there that school uniforms affect attendance?” This gives you a test for relevance. A page about uniform prices could be useful for a different question, but it would not directly answer this one.
Next, write the kind of evidence you need. Are you explaining what happened, comparing viewpoints, analysing a text or testing a factual claim? Check the assignment sheet before deciding that every source needs to be a journal article.
2. Investigate who is behind the information
Find the author and publisher, then open a new tab. Search for information about them beyond their own biography or About page. Look for relevant expertise and a clear connection to the subject. An organisation’s reputation in one field does not automatically make it an authority in another.
This is lateral reading: leaving a page to investigate it through other sources. The University of Connecticut Library explains that outside checks complement careful reading when a web source cannot immediately be verified.
University of Connecticut: evaluating sources
3. Follow the evidence behind the claim
Choose the claim you intend to use, not every sentence on the page. Follow its citation or link. Does the original document actually support the wording? Read enough surrounding material to understand the population, time period and limitations. If the page mentions research but gives no usable reference, look for the original; if you cannot find it, record that uncertainty.
Compare coverage from a source with a separate evidence base. Two articles repeating the same press release do not provide two independent confirmations. The University of the District of Columbia recommends comparing other coverage and tracing linked claims back to their starting point.
UDC Library: evaluating sources and lateral reading
4. Check date, purpose and fit
Ask whether the date suits the question. A historical document can be exactly what you need for history; a current policy claim needs information that reflects the relevant policy period. Identify whether the source aims to inform, persuade, sell or entertain. A viewpoint does not automatically make a source useless, but it affects how you interpret and introduce it.
The University of Texas at Austin Library groups evaluation around currency, relevance, authority, accuracy and purpose. Its guidance also warns that search position and professional appearance are not proof of credibility.
UT Austin Library: evaluation through lateral reading
5. Decide what the source can support
Use three labels: use, use with limits, or replace. “Use with limits” means you can name the boundary in your writing. You might cite an opinion piece as evidence of a viewpoint, without treating it as proof that its factual claims are correct. If a source fails an essential assignment requirement, replace it even if it is interesting.
Worked example: a claim that is bigger than its evidence
Imagine an invented article titled “School uniforms solve attendance problems.” It links to a fictional survey in which 40 parents at one school said they preferred uniforms. These details are made up for practice; they are not a real study.
The headline concerns attendance, but the survey measures parent preferences. It cannot establish that attendance improved. Your source note should say: “Possible evidence of parent opinion at this school; unsuitable evidence for an attendance effect.” Next, search for a source that actually measures attendance and examine how that measurement was made.
The key habit is matching the claim to what was measured. You do not need to accuse the author of dishonesty to explain why their evidence does not answer your question.
Copy this source-check worksheet
For each source, record: title and URL; author and publisher; publication or update date; the exact claim you need; the underlying evidence; what an outside check revealed; an important limitation; and your use/use-with-limits/replace decision. Add page or paragraph details while you can still find them.
Finish with one sentence: “I can use this source to support ___ because ___, but it does not show ___.” If you cannot complete that sentence, pause before adding the source to your bibliography.
Common questions
Is a .org or .edu address enough?
No. Treat the domain as a clue about the website, then check the particular author, document and evidence. A domain ending alone does not establish that a specific claim is accurate.
What if sources disagree?
Compare the question, definitions, dates and evidence each source uses. Write down the disagreement rather than choosing the answer you prefer. If you cannot resolve it, ask your teacher or librarian how to represent the uncertainty.
Can I use AI to check a source?
Follow your assignment’s AI rules. If AI use is allowed, it can help you list questions to investigate, but open and read the real sources yourself. A generated citation or confident answer is not verification. See Prepo’s guide to using an AI homework helper without copying for a practical checking routine.
Use an AI homework helper while keeping the thinking yours
Try the worksheet on one source today. Keep the evidence, limitation and decision beside your notes so that your final paragraph makes only the claim you can support.