The Indiana Genealogical Society has added a database for Marion County to the County Records section of the Members Only area:
--Graduates of Castleton High School, Marion County, Indiana (1897-1941)--Castleton High School was a school in Lawrence Township, on the north side of Indianapolis.
This is a premium database, accessible only to IGS members. There are more than 205 databases in the Members Only area. More databases will be added over time.