The motto of York Catholic High School is 'Maria Impende Juvamen'.
Yes.
There are a lot. Here's a list of Catholic high schools just in the bourough of Queens: http://queens.about.com/cs/highschools/a/catholic_hs.htm Here's a list of Catholic high schools in New York State, but each has its city listed: http://en.wikipedia.org/wiki/List_of_Catholic_schools_in_New_York .
University of Toronto's motto is 'Velut arbor ævo'.
The motto of York is ''Let the Banner of York Fly High''.
Columbia High School - New York -'s motto is 'Creating Honor and Success'.
The motto of Cristo Rey New York High School is '...the school that works.'.
The motto of Lawrence High School - New York - is 'Education for the New Millennium'.
The motto of Bayside High School - New York City - is 'Bayside=College'.
The motto of Garden City High School - New York - is 'Education: A Journey Into the Future'.
John Adams High School - New York City -'s motto is 'A Voyage of Excellence'.
The motto of Xavier High School - New York City - is 'Ad Majoriem Dei Gloriam''.
The motto of Grand Island Senior High School - New York - is 'Knowledge, Understanding, Truth'.