St. Clair County Illinois Schools Calendar

Around two dozen separate public school districts operate in this Metro East county, educating close to 40,000 students from the Mississippi River bottoms of East St. Louis to the military families at Scott Air Force Base to the farm villages around Marissa and Millstadt. No single calendar governs them. A family in O’Fallon, Belleville, Cahokia, or Dupo will find different start dates, break weeks, and snow-day decisions from the family just across a district line, even when both children ride the same highway to work in St. Louis.

School District Structure in St. Clair County

St. Clair County is a county, not a parish or borough, and Belleville is its seat. Education is organized through independent districts, each governed by its own elected board of education and its own superintendent’s office, and the county mixes every Illinois district type: unit districts serving kindergarten through grade 12, elementary-only districts that feed separate high school districts, and township high school districts. The principal districts include:

• East St. Louis School District No. 189, a unit district of roughly 4,500 students, with East St. Louis Senior High School at 4901 State Street, (618) 646-3700.
• Belleville School District No. 118, an elementary district with its office at 105 West A Street in Belleville, (618) 233-2830, along with neighboring elementary districts such as Belle Valley 119, Whiteside 115, Wolf Branch 113, High Mount 116, Signal Hill 181, Pontiac-William Holliday 105, Central 104, Grant 110, and Shiloh Village 85.
• Belleville Township High School District No. 201, the county’s largest district by enrollment at roughly 4,700 students, operating Belleville East and Belleville West high schools.
• O’Fallon Community Consolidated School District No. 90, with about 3,950 students and its district office at 118 East Washington Street, (618) 632-3666, feeding O’Fallon Township High School District No. 203, whose high school is at 600 South Smiley Street, (618) 632-3507.
• Cahokia Community Unit School District No. 187, serving Cahokia Heights, Sauget, and part of the East St. Louis area.
• Mascoutah Community Unit School District No. 19, which serves Mascoutah, Scott Air Force Base, and part of the Shiloh area, and Lebanon Community Unit School District No. 9.
• Dupo Community Unit School District No. 196, Brooklyn Unit School District No. 188, Freeburg Community Consolidated School District No. 70 with Freeburg Community High School District No. 77, Millstadt Consolidated School District 160, Smithton Community Consolidated School District 130, St. Libory Consolidated School District 30, and the Caseyville-area schools of Collinsville Community Unit School District No. 10, which crosses into Madison County.

The Regional Office of Education for St. Clair County, headquartered in Belleville at 1000 South Illinois Street, (618) 825-3900, supports all of these districts on compliance and certification and runs alternative and safe-school programs. Boards meet on regular, publicly noticed schedules, typically monthly, with agendas posted in advance under Illinois open meetings law. Superintendent names and board dates change, so confirm them with the district office.

Academic Calendar Structure

St. Clair County districts typically begin the school year in mid-August and end in late May or early June, depending on weather days used. Because each board adopts its own calendar, first and last days vary, and in the elementary-feeder structure a family can have a child in an elementary district and another at a high school district whose dates differ by several days. Boards generally approve the next year’s calendar in the winter or spring.

High schools run on a semester system, with the first semester ending near winter break. Elementary and middle grades report by quarter or trimester, and each district lists grading dates in its calendar. Illinois requires at least 176 days of pupil attendance and a minimum number of instructional hours in a full school day, and every district builds its calendar to meet that standard with buffer days for weather. Start and end times vary widely, from the compact urban school day in East St. Louis to longer rural bus runs in the southern townships near Marissa and Smithton, and districts often publish bell schedules for each building.

School Holidays and Breaks

The standard Illinois pattern applies, with specific days shifting each year and by district:

• Labor Day in early September
• A fall break or long weekend in October in some districts
• Veterans Day, depending on board decision
• Thanksgiving break, usually Wednesday through Friday, and sometimes the full week
• Winter break, generally about two weeks over Christmas and New Year’s Day
• Martin Luther King Jr. Day and Presidents’ Day
• Spring break, usually one week in late March or early April
• Memorial Day

Illinois also recognizes Lincoln’s Birthday and Casimir Pulaski Day, but local boards decide whether to close school. Military families at Scott Air Force Base often plan around Mascoutah’s calendar, and families who split time between Illinois and Missouri should remember that St. Louis-area schools across the river follow different dates.

How to Find the Official St. Clair County School Calendar

Because there are so many districts, the first step is identifying which one serves your address, and the regional office of education can help with boundary questions. Then find that district’s official website and look under District, Parents, or Community sections for the calendar PDF, or request a printed copy at the district office. Calendars are normally adopted at a board meeting in the spring, so a copy viewed in the fall may cover only the current year.

For families comparing a large Metro East county with a small central Illinois county, the St. Clair County schools calendar can be read alongside the Shelby County schools calendar to see how a county with two dozen districts differs from one with six in start dates, breaks, and end-of-year timing.

Individual schools also publish supplemental calendars for athletics, concerts, and parent events, and these may change more often than the instructional calendar.

Early Release Days, Teacher Workdays, and Professional Development

Teachers report a few days before students for workdays, and each district schedules institute or professional development days on which students stay home. Illinois requires educators to complete continuing professional development to renew their licenses, so these days are part of the state framework. Early release days, used for staff meetings and training, appear on adopted calendars and are communicated through district websites, apps, automated calls and messages, social media, and notes sent home. For commuting parents who work in St. Louis, Fairview Heights, or Scott Air Force Base, advance notice matters, so check each child’s calendar as soon as it is posted.

Emergency Closures and Weather Days

St. Clair County’s weather risks include winter snow and ice, severe thunderstorms and tornado risk, extreme summer heat early in the school year, and Mississippi River and creek flooding in low-lying areas around East St. Louis, Cahokia, Dupo, and the American Bottom. Rural roads in the southern and eastern townships can become hazardous before main highways do.

Each superintendent decides on closures and delays, usually early in the morning after checking road conditions with highway crews and law enforcement and often consulting neighboring districts. Because the districts decide independently, one may close while another stays open. Announcements go out through each district’s automated phone and text system, website, app, and social media, along with St. Louis television and radio stations such as KSDK, KMOV, and Fox 2, and the Belleville News-Democrat.

Illinois lets districts build in emergency days and, under current rules, use e-learning or remote learning days in some circumstances. Whether a St. Clair County district uses a make-up day, an e-learning day, or a waiver depends on its board policy and is described in its calendar.

Graduation and End-of-Year Schedule

High school final exams generally fall in the last week or so of the year, with first-semester exams before winter break. Graduations at Belleville East and West, O’Fallon, East St. Louis, Cahokia, Mascoutah, and the smaller high schools are typically held in May or early June, often in school stadiums or larger venues for the bigger classes. Elementary and middle schools hold promotion ceremonies or end-of-year events in late May. Report cards are distributed at the end of each grading period, and each district offers a student information portal, with school offices ready to help with login problems.

Back-to-School and Registration Information

Families generally enroll or re-enroll over the summer, often online, though new residents can register at any time. Larger districts such as Belleville, O’Fallon, and East St. Louis have central registration procedures, while smaller districts register at the district or school office. Illinois districts generally require:

• Proof of residency, such as a utility bill or lease
• The child’s birth certificate
• Immunization records and required health examination forms
• Prior school records for transfer students

Because boundaries between elementary districts and high school districts overlap, a family in Swansea, Fairview Heights, Shiloh, or Caseyville may register children with an elementary district and then a separate township high school district. Military families arriving at Scott Air Force Base should confirm school assignments through Mascoutah and the base’s school liaison. Supply lists are generally posted in late summer, and open house and orientation events appear on district calendars shortly before classes begin.

Special Programs and Their Calendar Implications

St. Clair County offers more specialized options than most Illinois counties. East St. Louis District 189 operates schools of excellence and early childhood programs, Cahokia runs a school of choice, and the regional office operates the Innovative Pathways Program and safe school programs, all with schedules that may differ from a home district’s. Belleville high schools offer career and academic academies. Dual-credit and early college options are available through Southwestern Illinois College in Belleville and nearby universities such as McKendree University in Lebanon and Southern Illinois University Edwardsville, whose calendars can differ from a high school’s spring break. Pre-K programs often follow different hours or days, and online and e-learning options vary by district.

Athletics and Extracurricular Calendar Context

High school athletics in Illinois are governed by the Illinois High School Association, or IHSA. Practice start dates, season lengths, and postseason schedules come from the IHSA, not the local boards. Fall sports begin in August around the first day of school, winter sports run through the holiday break, and spring sports overlap with spring break and finals. East St. Louis, O’Fallon, Belleville, and Mascoutah compete in various conferences across the Metro East, so athletes and families should check both the athletic schedule and their district’s academic calendar.

State-Level Calendar Requirements and How Illinois Law Governs St. Clair County

The Illinois State Board of Education sets the framework within which each St. Clair County board builds its calendar. State law requires a minimum number of pupil attendance days and instructional hours and governs how emergency days, institute days, and e-learning days may be used. Within that framework, each board decides start and end dates, break length, and how professional development is scheduled. The St. Clair County Regional Office of Education supports compliance and the emergency day process, and Illinois open meetings and public notice rules shape how calendars are adopted and communicated. Because the districts are independent, those rules apply to each one separately.

Frequently Asked Questions

When does school start in St. Clair County, Illinois?
Most districts start in mid-August. The exact first day is set separately by each district’s board and appears on its adopted calendar.

When does school get out for summer in St. Clair County?
The last day usually falls in late May or early June, depending on weather days used. Check your district’s calendar for the planned date.

How many days are in a school year in St. Clair County?
Illinois requires at least 176 days of pupil attendance, and each district builds its calendar to meet or exceed that, plus days for teacher institutes that students do not attend.

How do I find out if school is cancelled today in St. Clair County?
Check your district’s automated alerts, website, app, and social media, plus St. Louis stations such as KSDK, KMOV, and Fox 2, local radio, and the Belleville News-Democrat. Each district decides independently.

What is the spring break schedule for St. Clair County schools?
Spring break is typically one week in late March or early April, but the exact week differs by district and year.

How do I enroll my child in St. Clair County schools?
Contact the district that serves your address, often through its online registration process, and bring proof of residency, a birth certificate, immunization and physical exam records, and any prior school records.

Are there any year-round schools in St. Clair County?
Generally no. The districts follow traditional calendars with summer breaks, though some offer summer programs. Confirm with your district whether any school uses a modified calendar.

Who do I contact about school calendar questions in St. Clair County?
Call your district office, such as O’Fallon District 90 at (618) 632-3666 or Belleville District 118 at (618) 233-2830, and ask for the current board-adopted calendar. The Regional Office of Education at (618) 825-3900 can help identify which district serves your address.