I cannot get the text to be italic for "in toto", but it means completely. I may just put it in quotes, or use a word like completely.
The school is attached to the Church named for SGG, so the way you see it is proper (for example, St. Thomas Aquinas High School; in this case, it is K-12, so one just writes the Saint's name and 'School' after it). I may, however, rephrase the sentence to avoid confusion for others in the future. Thank you. God speed.
Btw, it is Saint Gertrude the Great's feast day. May she intercede for us all.