To pass your Spanish exam, know what knowledge and skills you will be tested on – meaning you need to know the DELE / SIELE / OPI exam curriculum (these exams are VERY DIFFERENT from school or college exams)
For acing your Spanish oral exam (the American OPI or the DELE / SIELE) know the examiners’ four assessment criteria and do lots of expertly guided PRACTICE to show coherence, fluency, ample lexis plus accurate language use.