How many maris Stella schools are there in the world?

There's no definitive answer to how many schools worldwide are named "Maris Stella". "Maris Stella" is Latin for "Star of the Sea," a title for the Virgin Mary, and many schools, particularly Catholic schools, use this name. There's no central registry tracking all schools with this name globally. You'd have to conduct extensive research, country by country, to even attempt a count, and the result would likely be incomplete.