MOHighCalendar available · 198 events · Auto-updating
MARK TWAIN SR. HIGH — School Calendar 2026-27
High|CENTER, Missouri|RALLS CO. R-II
CENTER, MO 63436
Loading...
Never miss a day at MARK TWAIN SR. HIGH.
Sync this calendar to your phone.
Auto-updates all year · $29.99/yr
Upcoming Events
Aug
17
Mon
No School / PD for StaffEvent
Aug
17
Mon
No school/Offices ClosedEvent
Aug
17
Mon
No school/Offices ClosedEvent
Aug
17
Mon
No School / PD for StaffEvent
Aug
18
Tue
PD for StaffEvent
Aug
18
Tue
PD for StaffEvent
Also available for your address
Sync all 198 events to your phone
Plus waste, sports, holidays, and more.
School Profile
Grades
9–12
Enrollment
259
Student:Teacher
13.6:1
Locale
Rural
District
RALLS CO. R-IIEcon. Disadvantaged
33.2%
Phone
(573)267-3397School Statistics
Academics (SY 2020-21)
ELA Proficiency
45-49%
Math Proficiency
20-24%
Graduation Rate
>=90%
Chronic Absenteeism
15.5%
SY 2019-20
Programs & Activities (SY 2021-22)
Gifted & Talented
17 students enrolled
Dual Enrollment
47 students enrolled
SAT/ACT
51 test takers
Athletics
9 sports, 9 teams
155 participants
Student-Teacher Ratio: 10:1
Better than average in MOTechnology & Internet Access (SY 2021-22)
1:1 Devices
Student devices available
Wi-Fi
Campus-wide wireless
Fiber Internet
High-speed connection
233
Connected devices
Staff & Support Services (SY 2021-22)
Teachers (FTE)
25
92% fully certified
Counselors
1
Nurses
0.25
School Resource Officers
0.25
Anti-Bullying Policy
District Finance (FY 2023)
Per-Pupil Spending
$10,693
Total current expenditure
Instruction Spending
$6,542
Per pupil, classroom only
Total Revenue/Pupil
$12,570
All funding sources
Funding Sources
Federal 11%State 32%Local 57%
District-level data from NCES F-33 Survey
Community Context
Median Home Value
$204,451
+4.9% 1yr+45.8% 5yr
Hannibal, MO metro area
Community Need Level
Moderate
CDC/ATSDR Social Vulnerability Index 2022
Neighborhood Indicators (Census Tract)
20.9%
Below 150% poverty line
5.2%
Unemployment rate
8.1%
Uninsured residents
8.7%
No HS diploma (25+)
Special Education (IDEA)
District-level data from IDEA Part B · Students ages 3-21 served under IDEA
Total Students Served
142
Ages 3-21 under IDEA
School-Age (6-21)
126
Receiving special ed services
Est. % of Enrollment
49%
District rate, school may vary
Disability Categories (District)
Specific Learning Disability
39 (31%)
Other Health Impairment
35 (28%)
Speech/Language Impairment
28 (22%)
Intellectual Disability
9 (7%)
Autism
5 (4%)
Emotional Disturbance
4 (3%)
Source: U.S. Department of Education, IDEA Section 618 Data · District-level counts · Individual school figures may differ
Enrollment Trend (2014-2025)
251
Current enrollment
Stable(+5% 5yr)Coming Up
Mon, Aug 17, 2026
No School / PD for Staff
EventMon, Aug 17, 2026
No school/Offices Closed
EventMon, Aug 17, 2026
No school/Offices Closed
EventFull School Calendar 2026-27
| Date | Event |
|---|---|
| Mon, Sep 7, 2026 | No school/Offices Closed |
| Mon, Sep 7, 2026 | No school/Offices Closed |
| Thu, Sep 10, 2026 | MT Senior Picture Day |
| Thu, Sep 10, 2026 | MT Senior Picture Day |
| Mon, Sep 14, 2026 | No school/Offices Closed |
| Mon, Sep 14, 2026 | No School / PD for Staff |
| Mon, Sep 14, 2026 | No School / PD for Staff |
| Mon, Sep 14, 2026 | No school/Offices Closed |
| Mon, Sep 21, 2026 | No school/Offices Closed |
| Mon, Sep 21, 2026 | No school/Offices Closed |
| Tue, Sep 22, 2026 | MT School Picture Day |
| Tue, Sep 22, 2026 | MT School Picture Day |
| Mon, Sep 28, 2026 | No school/Offices Closed |
| Mon, Sep 28, 2026 | No school/Offices Closed |
| Mon, Oct 5, 2026 | No school/Offices Closed |
| Mon, Oct 5, 2026 | No school/Offices Closed |
| Sat, Oct 10, 2026 | Ralls County Honor Flight Ride |
| Sat, Oct 10, 2026 | Ralls County Honor Flight Ride |
| Mon, Oct 12, 2026 | No School / PD for Staff |
| Mon, Oct 12, 2026 | No school/Offices Closed |
| Mon, Oct 12, 2026 | No school/Offices Closed |
| Mon, Oct 12, 2026 | No School / PD for Staff |
| Mon, Oct 19, 2026 | No school/Offices Closed |
| Mon, Oct 19, 2026 | End of 1st Quarter |
| Mon, Oct 19, 2026 | End of 1st Quarter |
| Mon, Oct 19, 2026 | No school/Offices Closed |
| Wed, Oct 21, 2026 | Parent Teacher Conferences |
| Wed, Oct 21, 2026 | Parent Teacher Conferences |
| Fri, Oct 23, 2026 | No School / Offices Closed |
| Fri, Oct 23, 2026 | No School / Offices Closed |
| Mon, Oct 26, 2026 | No school/Offices Closed |
| Mon, Nov 2, 2026 | No school/Offices Closed |
| Mon, Nov 2, 2026 | No school/Offices Closed |
| Tue, Nov 3, 2026 | MT Absentee / Retake Picture Day |
| Tue, Nov 3, 2026 | MT Absentee / Retake Picture Day |
| Mon, Nov 9, 2026 | No School / PD for Staff |
| Mon, Nov 9, 2026 | No school/Offices Closed |
| Mon, Nov 9, 2026 | No School / PD for Staff |
| Mon, Nov 9, 2026 | No school/Offices Closed |
| Mon, Nov 16, 2026 | No school/Offices Closed |
| Mon, Nov 16, 2026 | No school/Offices Closed |
| Mon, Nov 23, 2026 | No school/Offices Closed |
| Mon, Nov 23, 2026 | No school/Offices Closed |
| Wed, Nov 25, 2026 | No School Fall Break |
| Wed, Nov 25, 2026 | No School Fall Break |
| Mon, Nov 30, 2026 | No school/Offices Closed |
| Mon, Nov 30, 2026 | No school/Offices Closed |
| Mon, Dec 7, 2026 | No school/Offices Closed |
| Mon, Dec 7, 2026 | No school/Offices Closed |
| Mon, Dec 14, 2026 | No School / PD for Staff |
| Mon, Dec 14, 2026 | No school/Offices Closed |
| Mon, Dec 14, 2026 | No school/Offices Closed |
| Mon, Dec 14, 2026 | No School / PD for Staff |
| Fri, Dec 18, 2026 | End of 2nd Quarter |
| Fri, Dec 18, 2026 | End of 2nd Quarter |
| Mon, Dec 21, 2026 | No school/Offices Closed |
| Mon, Dec 21, 2026 | No school/Offices Closed |
| Tue, Dec 22, 2026 | No School Winter Break |
| Tue, Dec 22, 2026 | No School Winter Break |
| Mon, Dec 28, 2026 | No school/Offices Closed |
| Mon, Dec 28, 2026 | No school/Offices Closed |
| Mon, Jan 4, 2027 | No school/Offices Closed |
| Mon, Jan 4, 2027 | No school/Offices Closed |
| Mon, Jan 4, 2027 | No School / PD for Staff |
| Mon, Jan 4, 2027 | No School / PD for Staff |
| Mon, Jan 11, 2027 | No school/Offices Closed |
| Mon, Jan 11, 2027 | No school/Offices Closed |
| Mon, Jan 18, 2027 | No school/Offices Closed |
| Mon, Jan 18, 2027 | No school/Offices Closed |
| Mon, Jan 25, 2027 | No school/Offices Closed |
| Mon, Jan 25, 2027 | No school/Offices Closed |
| Mon, Feb 1, 2027 | No school/Offices Closed |
| Mon, Feb 1, 2027 | No school/Offices Closed |
| Mon, Feb 8, 2027 | No School / PD for Staff |
| Mon, Feb 8, 2027 | No school/Offices Closed |
| Mon, Feb 8, 2027 | No school/Offices Closed |
| Mon, Feb 8, 2027 | No School / PD for Staff |
| Mon, Feb 15, 2027 | No school/Offices Closed |
| Mon, Feb 15, 2027 | No school/Offices Closed |
| Wed, Feb 17, 2027 | End of 3rd Quarter |
| Wed, Feb 17, 2027 | End of 3rd Quarter |
| Mon, Feb 22, 2027 | No school/Offices Closed |
| Mon, Feb 22, 2027 | No school/Offices Closed |
| Mon, Mar 1, 2027 | No school/Offices Closed |
| Mon, Mar 1, 2027 | No school/Offices Closed |
| Mon, Mar 8, 2027 | No School / PD for Staff |
| Mon, Mar 8, 2027 | No school/Offices Closed |
| Mon, Mar 8, 2027 | No school/Offices Closed |
| Mon, Mar 8, 2027 | No School / PD for Staff |
| Mon, Mar 15, 2027 | No school/Offices Closed |
| Mon, Mar 15, 2027 | No school/Offices Closed |
| Mon, Mar 22, 2027 | No school/Offices Closed |
| Mon, Mar 22, 2027 | No school/Offices Closed |
| Mon, Mar 29, 2027 | No school/Offices Closed |
| Mon, Mar 29, 2027 | No school/Offices Closed |
| Mon, Apr 5, 2027 | No school/Offices Closed |
| Mon, Apr 5, 2027 | Snow Day Make up #1 |
| Mon, Apr 5, 2027 | Snow Day Make up #1 |
| Mon, Apr 5, 2027 | No school/Offices Closed |
| Mon, Apr 12, 2027 | No school/Offices Closed |
| Mon, Apr 12, 2027 | No School / PD for Staff |
| Mon, Apr 12, 2027 | No School / PD for Staff |
| Mon, Apr 12, 2027 | No school/Offices Closed |
| Mon, Apr 19, 2027 | Snow Day Make up #2 |
| Mon, Apr 19, 2027 | No school/Offices Closed |
| Mon, Apr 19, 2027 | No school/Offices Closed |
| Mon, Apr 19, 2027 | Snow Day Make up #2 |
| Mon, Apr 26, 2027 | Snow Day Make up #3 |
| Mon, Apr 26, 2027 | Snow Day Make up #3 |
| Mon, Apr 26, 2027 | No school/Offices Closed |
| Mon, Apr 26, 2027 | No school/Offices Closed |
| Mon, May 3, 2027 | No school/Offices Closed |
| Mon, May 3, 2027 | No school/Offices Closed |
| Mon, May 10, 2027 | No school/Offices Closed |
| Mon, May 10, 2027 | No school/Offices Closed |
| Mon, May 17, 2027 | No school/Offices Closed |
| Mon, May 17, 2027 | No school/Offices Closed |
| Tue, May 18, 2027 | Senior Awards Night |
| Tue, May 18, 2027 | Senior Awards Night |
| Wed, May 19, 2027 | Senior Tea |
| Wed, May 19, 2027 | Senior Baccalaureate |
| Wed, May 19, 2027 | Senior Baccalaureate |
| Wed, May 19, 2027 | Senior Tea |
| Sun, May 23, 2027 | Graduation |
| Sun, May 23, 2027 | Graduation |
| Mon, May 24, 2027 | No school/Offices Closed |
| Mon, May 24, 2027 | No School / PD for Staff |
| Mon, May 24, 2027 | No school/Offices Closed |
| Mon, May 24, 2027 | No School / PD for Staff |
| Fri, May 28, 2027 | End of 4th Quarter |
| Fri, May 28, 2027 | Last Day of School |
| Fri, May 28, 2027 | Last Day of School |
| Fri, May 28, 2027 | End of 4th Quarter |
| Mon, May 31, 2027 | No school/Offices Closed |
| Mon, May 31, 2027 | No school/Offices Closed |
| Mon, Jun 7, 2027 | No school/Offices Closed |
| Mon, Jun 7, 2027 | No school/Offices Closed |
| Mon, Jun 14, 2027 | No school/Offices Closed |
| Mon, Jun 14, 2027 | No school/Offices Closed |
| Mon, Jun 21, 2027 | No school/Offices Closed |
| Mon, Jun 21, 2027 | No school/Offices Closed |
| Mon, Jun 28, 2027 | No school/Offices Closed |
| Mon, Jun 28, 2027 | No school/Offices Closed |
Showing 143 events for the 2026-27 school year
Frequently Asked Questions about MARK TWAIN SR. HIGH
As of the most recent data, 259 students are enrolled at MARK TWAIN SR. HIGH. It is a High school within the local district.
Calendar Guides
School profiles: Data from NCES Common Core of Data. Calendar events from district calendar sources, updated automatically. · How we verify this data