Mode, rate, volume, PEEP, FiO2 for AC/VC.
Mode, rate, volume, PEEP, pressure support, FiO2 for VC SIMV.
Mode, rate, inspiratory pressure, PEEP, FiO2, for AC/PC. Also state average volumes and minute ventilation since these are variable in this mode.
Know peak pressures, plateau pressures, and compliance. Know the most recent ABGs and CXR. Always check tube placement on newly intubated patients.
If you want to be very good, know whether they are taking additional breaths (breathing over the vent) and whether they have had any secretions, and if so what color and consistency. Know whether they have AutoPEEP (air trapping). If you know all of these and combine it with your other data, you can make proper decisions with regard to mechanical ventilation.
If you use other modes just tag me and ask, I just feel like PRVC, APRV, etc are a bit over most students' heads.