St. Stanislaus High School is a private primary and secondary school for boys located in Bandra, Mumbai, Maharashtra, India. Founded in 1863 by German Jesuit priests as an orphanage, the institution later grew to be a full-fledged school for day-scholars as well as boarders and now has more than 2,300 students from KG-10. The school is spread over a campus of approximately seven acres, making it one of the largest schools in Mumbai.