Why timing matters
The Leaving Cert and Junior Cycle exams run through June, and June is the worst month for grass pollen in Ireland. In 2026, grass first reached High on 6 June, and on 25 June every county was High.
A study of over 1,800 teenagers in England (Walker and colleagues, Journal of Allergy and Clinical Immunology, 2007) found that students with hay fever symptoms on exam days were more likely to drop a grade, and more likely still if they took antihistamines that cause drowsiness.
A plan for May and June
- In early May, talk to a pharmacist or GP about treatment. Many hay fever treatments, especially nasal sprays, work best if you start a couple of weeks before symptoms.
- Choose a non-drowsy antihistamine. Try it before the exams, not for the first time on the day.
- Study indoors with the windows closed on High pollen days. Take breaks outside early in the morning or after rain.
- Shower and change before bed so pollen doesn’t stay on your pillow.
- The evening before each exam, check the forecast for your town. On High days, wear sunglasses on the way in and keep tissues and water with you.
On the day
- Take your usual treatment at the usual time.
- If the exam room has open windows near your seat, ask the superintendent before the exam starts.
- Bring eye drops if you use them.
For parents
Hay fever can look like tiredness or poor concentration. If your child is sneezing, rubbing their eyes or sleeping badly in May and June, it is worth sorting out treatment well before the exams start.
Questions
When do the Leaving Cert exams start?
Usually in the first week of June, running for about three weeks. Check the State Examinations Commission timetable for the exact dates.
Which hay fever tablets don’t cause drowsiness?
Several antihistamines are labelled non-drowsy. A pharmacist can recommend one that suits you. Some people still feel a little sleepy, so try it before exam day.
This is general information, not medical advice. If you are worried about symptoms, talk to your pharmacist or GP.