 The St. Clair Catholic District School Board is responsible for the city 's seven elementary and two secondary Catholic schools ( St. Christopher 's and St. Patrick 's ) . In 2014 , St. Patrick 's and St. Christopher 's merged , under the St. Patrick 's name , on St. Christopher 's North Sarnia site . 
 The St. Clair Catholic District School Board <a href='drop_aux' title='1'><mark>is</mark></a>responsible for the city <a href='null_genetive' title='2'><mark>'s</mark></a>seven elementary and two secondary Catholic schools ( St. Christopher <a href='null_genetive' title='3'><mark>'s</mark></a>and St. Patrick <a href='null_genetive' title='4'><mark>'s</mark></a>) . In 2014 , St. Patrick <a href='null_genetive' title='5'><mark>'s</mark></a>and St. Christopher <a href='null_genetive' title='6'><mark>'s</mark></a>merged , under the St. Patrick <a href='null_genetive' title='7'><mark>'s</mark></a>name , on St. Christopher <a href='null_genetive' title='8'><mark>'s</mark></a>North Sarnia site . 
The St. Clair Catholic District School Board responsible fir the city  seven elementary and 2 secondary Catholic schools ( St. Christopher  and St. Patrick  ) . In 2014 , St. Patrick  and St. Christopher  merged , under da St. Patrick  name , on St. Christopher  North Sarnia site .