Become a Member

Welcome. Thanks for your interest in joining the MHSOBA. Please choose a Membership option that suits you.

Membership Subscription

Test-drive Your Contribution Page

This page is currently running in test-drive mode. Transactions will be sent to your payment processor's test server. No live financial transactions will be submitted. However, a contact record will be created or updated and a test contribution record will be saved to the database. Use obvious test contact names so you can review and delete these records as needed. Test contributions are not visible on the Contributions tab, but can be viewed by searching for 'Test Contributions' in the CiviContribute search form. Refer to your payment processor's documentation for information on values to use for test credit card number, security code, postal code, etc.

All Memberships are inclusive of a $5 online processing fee.

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If you would like to sign up for multiple years, please click here.

Member Benefits


  • Access to an incredible network of Old Boys, including Rhodes Scholars, Olympic athletes, world-class businessmen, judges, entrepreneurs and experts in every field of professional endeavour.
  • Regular opportunities to connect with classmates from your graduating year.


  • Discounted entry to MHS reunions.
  • Discounted tickets to the prestigious Annual Dinner, the MHSOBA’s gala event.
  • Access to MHSOBA members-only functions.


  • Access to various scholarships to support further study or employment.

Unicorn Club

  • Reduced venue hire at The Unicorn Club for your next business, networking or social event *conditions apply