Gather the documents you need to write the DBQ. The advanced placement (AP) and International Baccalaureate (IB) exams will provide all the original documents; however, your teacher may ask you to locate original and/or reputable secondary sources for practice DBQs.
Compare primary and secondary sources before you begin writing. As of 2011, the AP test provides only original documents and sources, but the IB test (international version of the AP test) provides secondary sources alongside original sources. Use secondary sources to help you expand and refine your argument, but always cite from the original source.
Write down the author's point of view as well as your own thoughts and opinions about the documents. Taking notes will help you as you begin the writing process.
Write out three to four tentative theses for your DBQ based on the document and supplementary readings. Question yourself as you write your DBQ. For example, ask: What is the author trying to say? Do I agree or disagree? Is the document supported by logic or opinion? If it were written in the current era would the thesis still be the same? Is my analysis of the document supported by evidence in the document itself as well as supplementary readings?
Rewrite and expand your DBQ thesis so it includes all the main points you want to include in your essay. The thesis itself should forecast the points made in your DBQ and be supported by evidence from the documents.
Proofread your DBQ thesis and supporting points using your word-processor spelling and grammar check. Use academic language, and check for spelling and use of appropriate tenses.