DEHighATSICalendar available · 120 events · Auto-updating
Seaford Senior High School — School Calendar 2026-27
High|Seaford, Delaware|Seaford School District
Seaford, DE 19973
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Upcoming Events
Jul
16
Thu
Board of Education RetreatEvent
Aug
3
Mon
Senior PortraitsEvent
Must have appointment
Aug
10
Mon
Senior PortraitsEvent
Must have Appointment
Aug
17
Mon
Board of Education MeetingEvent
Aug
17
Mon
Schools Closed for Students: Professional DevelopmentStaff Day
No school today. Confirm childcare or before/after-care coverage.
Aug
18
Tue
Schools Closed for Students: Professional DevelopmentStaff Day
No school today. Confirm childcare or before/after-care coverage.
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School Profile
Grades
9–12
Enrollment
833
Student:Teacher
17:1
Locale
Town
District
Seaford School DistrictPhone
(302)629-4587School Statistics
Academics (SY 2020-21)
ELA Proficiency
25-29%
Math Proficiency
10-14%
Graduation Rate
65-69%
Chronic Absenteeism
35.8%
SY 2019-20
Programs & Activities (SY 2021-22)
AP Program
8 courses offered
104 students enrolled
Dual Enrollment
48 students enrolled
SAT/ACT
156 test takers
Athletics
19 sports, 19 teams
325 participants
Student-Teacher Ratio: 14.5:1
Near average in DETechnology & Internet Access (SY 2021-22)
Wi-Fi
Campus-wide wireless
Fiber Internet
High-speed connection
805
Connected devices
Staff & Support Services (SY 2021-22)
Teachers (FTE)
66
59% fully certified
Counselors
2
Nurses
1
Anti-Bullying Policy
District Finance (FY 2023)
Per-Pupil Spending
$18,422
Total current expenditure
Instruction Spending
$10,140
Per pupil, classroom only
Total Revenue/Pupil
$19,457
All funding sources
Funding Sources
Federal 20%State 65%Local 15%
District-level data from NCES F-33 Survey
Community Context
Community Need Level
Moderate
CDC/ATSDR Social Vulnerability Index 2022
Neighborhood Indicators (Census Tract)
18.6%
Below 150% poverty line
4.9%
Unemployment rate
6.9%
Uninsured residents
10.5%
No HS diploma (25+)
Special Education (IDEA)
District-level data from IDEA Part B · Students ages 3-21 served under IDEA
Total Students Served
644
Ages 3-21 under IDEA
School-Age (6-21)
572
Receiving special ed services
Est. % of Enrollment
69%
District rate, school may vary
Disability Categories (District)
Specific Learning Disability
216 (38%)
Autism
84 (15%)
Other Health Impairment
77 (13%)
Speech/Language Impairment
74 (13%)
Intellectual Disability
47 (8%)
Emotional Disturbance
19 (3%)
Source: U.S. Department of Education, IDEA Section 618 Data · District-level counts · Individual school figures may differ
Enrollment Trend (2014-2025)
960
Current enrollment
Growing(+16% 5yr)Coming Up
Thu, Jul 16, 2026
Board of Education Retreat
EventMon, Aug 3, 2026
Senior Portraits
EventMon, Aug 10, 2026
Senior Portraits
EventFull School Calendar 2026-27
| Date | Event |
|---|---|
| Fri, Sep 4, 2026 | School Closed |
| Fri, Sep 4, 2026 | Labor Day Weekend |
| Fri, Sep 4, 2026 | Schools Closed |
| Mon, Sep 7, 2026 | Labor Day Holiday |
| Mon, Sep 7, 2026 | School Closed: Labor Day |
| Mon, Sep 7, 2026 | Schools Closed: Labor Day |
| Mon, Sep 14, 2026 | Board of Education Meeting |
| Tue, Sep 15, 2026 | School Closed for Students: Professional Development Day |
| Tue, Sep 15, 2026 | Schools Closed for Students: Professional Development |
| Fri, Oct 16, 2026 | School Closed for Students: Professional Development Day |
| Fri, Oct 16, 2026 | Schools Closed for Students: Professional Development |
| Mon, Oct 19, 2026 | Board of Education Meeting |
| Fri, Oct 23, 2026 | End of 1st Marking Period |
| Fri, Oct 23, 2026 | End of Marking Period 1 |
| Mon, Oct 26, 2026 | Schools Closed for Students: Professional Development |
| Mon, Oct 26, 2026 | School Closed for Students: Professional Development Day |
| Mon, Nov 2, 2026 | School Closed for Students: Parent Teacher Conferences |
| Tue, Nov 3, 2026 | Schools Closed: Election Day |
| Tue, Nov 3, 2026 | School Closed: Election Day |
| Thu, Nov 5, 2026 | School Closed for Students: Professional Development Day 1 |
| Thu, Nov 5, 2026 | Schools Closed for Students: PD (am) Return Day (pm) (½ para am) |
| Wed, Nov 11, 2026 | Schools Closed: Veterans Day |
| Wed, Nov 11, 2026 | School Closed: Veterans Day |
| Mon, Nov 16, 2026 | Board of Education Meeting |
| Wed, Nov 25, 2026 | Schools Closed: Thanksgiving |
| Wed, Nov 25, 2026 | Thanksgiving Break |
| Wed, Nov 25, 2026 | School Closed: Thanksgiving Break |
| Thu, Nov 26, 2026 | Schools Closed: Thanksgiving |
| Fri, Nov 27, 2026 | Schools Closed: Thanksgiving |
| Mon, Dec 14, 2026 | Board of Education Meeting |
| Wed, Dec 23, 2026 | Schools Closed: Winter Vacation |
| Wed, Dec 23, 2026 | School Closed: Winter Break |
| Thu, Dec 24, 2026 | Christmas Break |
| Thu, Dec 24, 2026 | Schools Closed: Winter Vacation |
| Fri, Dec 25, 2026 | Schools Closed: Winter Vacation |
| Mon, Dec 28, 2026 | Schools Closed: Winter Vacation |
| Tue, Dec 29, 2026 | Schools Closed: Winter Vacation |
| Wed, Dec 30, 2026 | Schools Closed: Winter Vacation |
| Thu, Dec 31, 2026 | Schools Closed: Winter Vacation |
| Fri, Jan 1, 2027 | Schools Closed: New Year’s Day |
| Fri, Jan 1, 2027 | New Year's Day |
| Mon, Jan 4, 2027 | Schools Reopen |
| Mon, Jan 4, 2027 | School Reopens |
| Thu, Jan 14, 2027 | End of Marking Period 2 |
| Thu, Jan 14, 2027 | End of 2nd Marking Period |
| Fri, Jan 15, 2027 | School Closed for Students: Professional Development Day |
| Fri, Jan 15, 2027 | Schools Closed for Students: Professional Development |
| Mon, Jan 18, 2027 | Schools Closed: Martin Luther King, Jr. Day |
| Mon, Jan 18, 2027 | MLK Jr. Day |
| Mon, Jan 18, 2027 | School Closed: MLK Day |
| Tue, Jan 19, 2027 | Board of Education Meeting |
| Fri, Jan 29, 2027 | Schools Closed for Students: Professional Development |
| Fri, Jan 29, 2027 | School Closed for Students: Professional Development Day |
| Mon, Feb 15, 2027 | School Closed: President's Day |
| Mon, Feb 15, 2027 | Schools Closed: Presidents’ Day |
| Mon, Feb 15, 2027 | Presidents Day |
| Tue, Feb 16, 2027 | School Closed for Students: Parent Teacher Conferences |
| Tue, Feb 16, 2027 | Board of Education Meeting |
| Fri, Mar 12, 2027 | School Closed for Students: Professional Development Day |
| Fri, Mar 12, 2027 | Schools Closed for Students: Professional Development |
| Mon, Mar 15, 2027 | Board of Education Meeting |
| Wed, Mar 24, 2027 | End of Marking Period 3 |
| Wed, Mar 24, 2027 | End of 3rd Marking Period |
| Thu, Mar 25, 2027 | Schools Closed for Students: Professional Development (½ para pm) |
| Thu, Mar 25, 2027 | School Closed for Students: Professional Development Day |
| Fri, Mar 26, 2027 | School Closed: Spring Break |
| Fri, Mar 26, 2027 | Schools Closed: Spring Break |
| Mon, Mar 29, 2027 | Schools Closed: Spring Break |
| Mon, Mar 29, 2027 | Spring Break |
| Tue, Mar 30, 2027 | Schools Closed: Spring Break |
| Wed, Mar 31, 2027 | Schools Closed: Spring Break |
| Thu, Apr 1, 2027 | Schools Closed: Spring Break |
| Fri, Apr 2, 2027 | Schools Closed: Spring Break |
| Mon, Apr 5, 2027 | School Reopens |
| Mon, Apr 5, 2027 | Schools Reopen |
| Mon, Apr 19, 2027 | Board of Education Meeting |
| Mon, Apr 26, 2027 | Schools Closed for Students: Professional Development |
| Mon, Apr 26, 2027 | School Closed for Students: Professional Development Day |
| Tue, May 18, 2027 | Board of Education Meeting |
| Fri, May 21, 2027 | Last day for Seniors |
| Fri, May 21, 2027 | Last Day for Seniors |
| Mon, May 31, 2027 | Memorial Day |
| Mon, May 31, 2027 | School Closed: Memorial day |
| Mon, May 31, 2027 | Schools Closed: Memorial Day |
| Fri, Jun 4, 2027 | SHS Graduation |
| Fri, Jun 4, 2027 | End of 4th Marking Period (Last Day for Students) |
| Fri, Jun 4, 2027 | SHS Graduation |
| Fri, Jun 4, 2027 | Last Day for Students |
| Mon, Jun 7, 2027 | Professional Development |
| Tue, Jun 8, 2027 | Professional Development |
| Tue, Jun 8, 2027 | Last Pupil Day |
| Wed, Jun 9, 2027 | Professional Development (½ am) |
| Thu, Jun 10, 2027 | Weather Contingency Days |
| Fri, Jun 11, 2027 | Weather Contingency Days |
| Mon, Jun 14, 2027 | Weather Contingency Days |
| Mon, Jun 14, 2027 | Board of Education Meeting |
| Tue, Jun 15, 2027 | Weather Contingency Days |
| Wed, Jun 16, 2027 | Weather Contingency Days |
| Fri, Jun 18, 2027 | Schools Closed: Juneteenth (observed) |
Showing 99 events for the 2026-27 school year
Frequently Asked Questions about Seaford Senior High School
Seaford Senior High School currently enrolls 833 students across High grade levels. The school operates under the local school district in DE.
Calendar Guides
School profiles: Data from NCES Common Core of Data. Calendar events from district calendar sources, updated automatically. · How we verify this data