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PATTONVILLE R-III — District Profile & Schools

ST ANN, Missouri · St. Louis County

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Key Dates — PATTONVILLE R-III School Calendar

The first day of school in PATTONVILLE R-III is Mon, Aug 24, 2026, and the last day of school is Thu, May 27, 2027, according to the district's published calendar. Scheduled breaks include Winter break (Wed, Dec 23, 2026 to Fri, Jan 1, 2027), Spring break (Mon, Mar 15, 2027 to Fri, Mar 19, 2027).

First day of school
Mon, Aug 24, 2026
Last day of school
Thu, May 27, 2027
Winter break
Wed, Dec 23, 2026 to Fri, Jan 1, 2027
Spring break
Mon, Mar 15, 2027 to Fri, Mar 19, 2027
Labor Day holiday
Mon, Sep 7, 2026
No school following conferences
Fri, Oct 16, 2026
Thanksgiving holiday
Wed, Nov 25, 2026 to Fri, Nov 27, 2026
Martin Luther King Jr. holiday
Mon, Jan 18, 2027
Presidents Day holiday
Mon, Feb 15, 2027
No school following conferences
Fri, Mar 12, 2027
Spring holiday
Fri, Mar 26, 2027
Memorial Day holiday
Mon, May 31, 2027
6,128
Students
11
Schools
13.2:1
Student-Teacher
463 teachers
-1 - 12
Grades

Quick Facts

557
Avg. School Size
647
Total Staff

PATTONVILLE R-III Calendar

32 events

Aug 10 - 13

PD Day

New teacher orientation

New teacher orientation

Fri, Aug 14

PD Day

Staff orientation/professional development

Staff orientation/professional development

Aug 17 - 21

PD Day

Staff orientation/professional development

Staff orientation/professional development

Mon, Aug 24

Event

First day of school

First day of school

Mon, Sep 7

Holiday

Labor Day holiday

No school for Labor Day holiday (district closed)

Fri, Oct 2

Early Dismissal

Early dismissal for staff collaboration

Early dismissal for staff collaboration (PreK-5 and Remington)

Wed, Oct 14

Meeting

Parent-teacher conferences

Parent-teacher conferences (PreK-12th grade)

Thu, Oct 15

Meeting

Parent-teacher conferences

Parent-teacher conferences (PreK-12th grade)

Fri, Oct 16

PD Day

No school following conferences

No school following conferences

Mon, Oct 19

PD Day

Staff development day

No school for staff development day

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Data source: official PATTONVILLE R-III website · Last verified Jul 2, 2026 · How we verify this data

Contact

Address
11097 ST CHARLES ROCK RD
ST ANN, MO 63074
Phone
(314)213-8500

Staff & Students

Teachers (FTE)
463
Total Staff
647
Data Source
NCES Common Core of Data
School Year 2023-24

Frequently Asked Questions about PATTONVILLE R-III

The first day of school in PATTONVILLE R-III is Mon, Aug 24, 2026, according to the district's published calendar.

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