May 17
- All Day
- International Day Against Homophobia, Transphobia & Biphobia
May 18
- All Day
- Speech Language Pathologist Day
May 19
- All Day
- STATUTORY HOLIDAY
- Victoria Day
May 20
- All Day
- International Human Resources Day
May 21
- All Day
- World Day of Cultural Diversity for Dialogue and Development
May 22
- All Day
- Declaration of the Báb
- Track & Field COSSA in Belleville
May 23
- 7:00 pm – 8:00 pm
- A Midsummer Night's Dream
May 25
- All Day
- National AccessAbility Week
- 2:00 pm – 4:00 pm
- HHSS Drama Club Presents: A Midsummer Night's Dream
May 26
- All Day
- Bike to School Week
May 27
- All Day
- Ascension of Bahá'u'lláh
May 28
- All Day
- Menstrual Hygiene Day
- Red Shirt Day of Action for AccessAbility and Inclusion
May 29
- All Day
- Ascension Day
- Track & Field OFSAA in Ottawa
May 31
- All Day
- Dragon Boat Festival
- PROM
Jun 1
- All Day
- Brain Injury Awareness Month
