"If they have that study timetable at least a month in advance of their first exam ... they'll be prepared and not be as stressed," she said.
Regular breaks and exercise should be scheduled, Ms Aomarere said.
Students also needed to be smart and ensure they got plenty of sleep, maintained a balanced diet and drank lots of water.
The school has been holding tutorials since the holidays for students sitting exams.
Mission Nutrition nutritionist Rene Schliebs warns there's more to exam success than last-minute revision, chocolate bars and strong black coffee.
Students hoping to last the distance - the final NCEA exam is on December 4 - need to keep their eating habits in check.
"The thing to remember is the brain relies on carbohydrates for energy," she said.
Students looking for a power-breakfast should begin their day with a bowl of porridge, which is a great source of B vitamins.
"B vitamins act like an anti-stress mechanism as well as providing energy for the brain," Mrs Schliebs said.
The best way to avoid an afternoon concentration lapse was to eat regularly, schedule in breaks and stay away from caffeinated products.
Snack foods such as almonds and sunflower seeds contained omega three fats which would help with staying alert, Mrs Schliebs said.
For a real boost, Mrs Schliebs recommends a serving of salmon, which contains high levels of omega three fatty acids.
Wanganui students sitting exams:
Level 1: 944
Level 2: 792
Level 3: 649
NZ Scholarship: 99
Total student count sitting exams in Wanganui: 2035
