Obtain your specific agency's exam announcement and candidate handbook — understand exactly what sections are tested Practice reading comprehension daily with policy-style passages, focusing on answering only from the text Review basic math: fractions, percentages, ratio/proportion, and time calculations Study situational judgment: understand the core CO decision framework (policy, minimum force, report up) Practice grammar and mechanics: subject-verb agreement, punctuation, sentence clarity Review report-writing principles: factual observations vs. conclusions, chronological structure Begin physical fitness training for the PAT component: timed running, push-ups, sit-ups Start the background clearance process early: check your credit, driving record, and address any issues Complete at least two full timed practice tests to build exam stamina and identify weak areas Research your state's specific CO exam format, passing score, and application deadlines at your DOC website