A synthesis essay becomes hard to control when the first source read supplies the thesis. Start by identifying the decision and drafting a tentative position. Then read all six sources, test that position against the evidence, and finalize the thesis only after you know what the packet can actually support.
Find the exact decision inside the prompt
Do not invent a role the prompt does not assign. Identify the issue being judged, its scope, and any qualifier. A prompt asking whether a public library system should eliminate late fees requires a position on that policy. You are not pretending to be the library system unless the prompt explicitly gives you that role.
State the decision the prompt requires
Restate the prompt's actual demand in one sentence before drafting a thesis. A prompt asking whether a library system should eliminate late fees is not asking for a general opinion about libraries; it is asking for a specific yes, no, or conditional answer to a specific policy question.
Set a tentative scope before source selection
Sketch a working position broad enough to revise. Then read the packet for support, limits, and counterevidence. Finalize the scope only after the sources have had a chance to challenge the first idea.
Write a defensible position without listing reasons
A thesis states a position; it does not need to preview three body paragraphs by name. "A library system should eliminate late fees because it increases access, reduces inequity, and improves circulation" is not required and can constrain the essay's development unnecessarily. A defensible position stated clearly is sufficient.
Build claims that can carry evidence
A thesis should be stated at a level of specificity that later paragraphs can actually support with the sources available. A thesis that is too vague gives body paragraphs nothing concrete to prove; a thesis that is too specific may claim more than the available sources can support.
Keep the thesis broader than any one source
A thesis that simply restates one source's position has let that source take over the essay. The thesis should be the student's own synthesized judgment, informed by multiple sources, not a paraphrase of the single source that happened to be read first or seemed most persuasive.
When the source packet changes the thesis
After reading all six sources, check whether your working position still answers the prompt and still survives the evidence. It is fine to refine a position in light of the evidence, but the thesis should still be answering the prompt's actual question, not a related question the sources happened to raise.
Use qualification only when it changes the argument
A qualified thesis, one that narrows or conditions the position, should qualify because the evidence genuinely requires it, not as a reflexive hedge. Qualification that does not change what the essay actually argues is not doing real work.
Exam Diamond
Draft a working position after you know what the prompt is asking. The source packet should test that position, and the final thesis should reflect any evidence that changes its scope.