District 303 serves about 13,590 students from the City of St. Charles and portions of West Chicago, South Elgin, Wayne, Campton Hills, Elburn, a very small portion of Elgin and unincorporated Kane County.
People served by the Wasco two-year high school program voted in 1950 to consolidate with District 303 after another change in state law eliminated two-year high schools.
District 303's composite ACT score for 2005 was 21.8 compared to a state average of 20.1.
)[2] District 303 staff is actively involved in curriculum renewal and redesign in partnership with the Illinois Mathematics and Science Academy along with Brown University, in the School Year of 2023-2024 District 303 used a new ELA Curriculum from McGraw Hill Education called Wonders.
District 303 employs about 1,750 full and part-time staffers in 2005-06, including about 1,065 certificated staff.
In 2018, Fox Ridge Elementary was shut down and converted into an Early Childhood Center.
In October 2023, The D303 School Board decided to change Fox Ridge Early Childhood Center into an Elementary School, The Early Childhood Center will be moved to the former Hanes Middle.