How to Write a Synthesis Essay for AP Lang

Start by reading the prompt page carefully. The prompt will usually ask you to "evaluate the factors" or "develop a position" on a specific topic, such as the value of the penny or the impact of wind farms. Do not look at the sources yet. Spend two minutes deciding your initial stance based on the prompt's context. This prevents the sources from dictating your opinion; instead, you will use the sources to support your argument. Identify the rhetorical situation and the specific task required by the College Board rubric.

Read the 6–7 provided sources with a pen in hand. As you read, look for relationships between the documents. Does Source A support the claim made in Source C? Does Source B provide a counterargument to Source D? Mark each source as "Pro," "Con," or "Context." Synthesis is not just summarizing sources; it is showing how different perspectives interact. Aim to find at least three sources that align with your position and one that offers a nuance or counterargument you can address.

Your thesis must do more than restate the prompt. It must take a clear, defensible position that can be supported by the evidence. Use a "complex sentence" structure to show sophistication. A good formula is: "Although [Counterargument], [Your Position] because [Reason 1] and [Reason 2]." This structure earns you the thesis point immediately and sets up a roadmap for your body paragraphs. Ensure your thesis is located at the end of your introductory paragraph.

Avoid the mistake of dedicating one paragraph to one source. Instead, organize your essay by claims. Each body paragraph should start with a topic sentence that states a reason why your thesis is true. Within that paragraph, bring in two different sources that speak to that reason. This creates the "conversation" the graders look for. For example, use Source A to provide a fact and Source B to provide the expert opinion that explains why that fact matters. This demonstrates synthesis rather than simple reporting.

Incorporate evidence using signal phrases and parenthetical citations. Do not use long block quotes; instead, use "shredded" quotes - small fragments of the source woven into your own sentences. After every piece of evidence, provide commentary that explains how the evidence supports your specific argument. The ratio should be roughly 1:2 (one sentence of evidence for every two sentences of your own analysis). Always cite your sources using the designated letter or name: (Source A) or (Source B).

To earn the sophistication point, acknowledge the complexity of the issue. Dedicate a portion of a paragraph or a separate paragraph to a counterargument. Use a source that disagrees with you, then rebut it or concede its validity while explaining why your position remains stronger. Finally, write a conclusion that moves beyond a simple summary. Link your argument to a broader social, political, or economic context to show the "so what?" of your position.