By Noreen S. Ahmed-Ullah, Tribune reporter

6:44 p.m. CDT, July 15, 2011

Activists at Whittier Elementary School said Friday they're ending their latest 25-day sit-in and would like to resume negotiations with Chicago Public Schools.

Activists pushing for a library at Whittier Elementary School said Friday they're ending their latest 25-day sit-in and would like to resume negotiations with Chicago Public Schools administrators.

CPS decided last month to cancel construction of the library inside the school because of the sit-in at a nearby field house, which prevented construction crews from getting inside the