In 1929 Horace Mann School had a student body of 870. By 1937, it increased to nearly 2400 students and 80 staff members. Share your memories in the comments. Full 4K in comments. When enrollment grew to nearly 2600 in 1956, exceeding Horace Mann's intended capacity, the district decided to build an additional school on the southern portion of the property. John H. Vohr Elementary School opened in in 1958. When the steel industry declined in the '60s, the population of Gary began to shrink, as d