Graduating high school with an OP 1 in Australia opens various lucrative study options, particularly in fields that heavily involve mathematics. Engineering, especially structural engineering, is frequently recommended due to its strong job market and earning potential. Degrees in economics and mathematics are also highlighted as pathways to high-paying careers, particularly in finance as quantitative analysts on Wall Street. Actuarial science is noted for its profitability, and pursuing a joint degree in mathematics and computer science is suggested for a broader skill set. The importance of personal interest and experience is emphasized, with recommendations to engage in internships for better career clarity and marketability. Overall, informed experimentation in these fields is advised to align personal interests with financial goals.