The plaque is unusually verbose:
Grateful Acknowledgment to Miss Cordelia P. MonnettThe right side has the trustees in 1966 and the trustees who have served in the past, but I do not want to type in all those names. You will have to go read them yourself.
Monnett School for Girls
In 1908 Miss Cordelia P. Monnett bequeathed to the deaconesses of the Trinity Methodist Church of Rensselaer, Indiana property to be used for a girls school, and for two years it was to be used as such.
In 1910 the board of trustees changed the school to a boarding school, with instruction through the 8th grade.
In 1913 and again in 1925 additional wings were added to the frame structure. In 1925 a brick dormitory was constructed, now being used for school administrative purposes.
In 1942 the school was separated from the church influence and became a nonsectarian school owned and operated by a board of trustees, and was accredited through the 8th grade.
In June 1954 the school closed its doors as the type of student was taken over by the state and welfare programs and the classification for which the school was created was thus terminated.
The trustees sold the property in July 1954 to the city and the city deeded it to the Rensselaer Public Schools in April 1955.
They then erected "The Monnett Public Grade School" with five class rooms and opened the building for use in September 1957.
I searched the Internet trying to find more information, and did find mention of the school in an educational journal and a book.
From The Educator-journal (published in Terra Haute, Indiana Vol XV No. 1 September, 1914 p 423):
The Monnett school for girls at Rensselaer now has a total of thirty-two girls, which is four above their capacity limit. Miss Simpson is principal of the school and is anticipating better conditions when the proposed new building is erected.From Indiana. A Guide to the Hoosier State By Federal Writers' Project, United States. - Works Progress Administration, afterwards Work Projects Administration. - Federal Writers' Project
(Published by US History Publishers, 1947 ISBN 160354013X, 9781603540131) p 324:
At ll m. is the Monnett School for Girls, an elementary school founded in 1903 and maintained by the Methodist Episcopal Church of Rensselaer. The school accommodates 40 pupils.Both of these were part of Google's effort to digitize all known books.
From one of my local sources who remembers the Monnett School for Girls, the girls kept to themselves and did not mix with the local kids much.