St. Gabriel of the Sorrowful Virgin Church and School 5200 Greenridge Dr, Pittsburgh, PA15236 St. Gabriel of the Sorrowful Virgin School is run by St. Gabriel of the Sorrowful Virgin Parish, a Catholic community…More that is, as its website states, "focused on the principle of tithing." It is because of this charitable giving that St. Gabriel School remains one of the few tuition-free Catholic institutions in the country. St. Gabriel Possenti is the patron saint of both the church and school. The parish offers an array of activities outside of mass and classes, all in the name of piety. St. Gabriel's, or St. Gabe's for short, has been called the "Miracle on Greenridge Drive."