Current Session Info

There are no sessions to register for at this time.

Getting Help

If you need help with the registration process, click here to submit a request, or contact:

For assistance with Registration,

For more information, visit the St William CYO website at


Welcome to St. William the Abbot CYO online registration system.

Registration for CYO Basketball for boys and girls in Grades 4 - 12 will be held Monday, June 6th through Tuesday, June 21st. Representatives from St. William’s CYO will be available on Saturday, June 18th from 9:00 - 10:00 AM in the St. William the Abbot School gym for those who have any questions or would like to register in person.

Registration for Girls Summer Volleyball and Basketball was held from Monday May 16th through Monday May 23rd.  See for more information.   

Further information for the Sharks swim team is available on our website, or via email at