Make sure research meets this standard. Unethical researchers sometimes make claims in their reports that actually contradict their own figures and tables. Or they will ignore in their narrative key results that appear in their tables. Try to make sure that figures and tables match researchers' findings and recommendations. If they don't, it's likely that ideology, not objective fact-finding, is what's being served.
Education studies carry more weight if they have undergone a process of peer review and publication.
As part of this process, researchers submit their work to reputable research journals, which in turn submit their work to other researchers knowledgeable about the topic and methods.