December 2026

Dec 9 Wed
- Grade-Level Meeting 2:35 PM – 3:30 PM (In Grade Chair classrooms)
  Horizon Science Academy Cleveland High School Events
Dec 14 Mon
- Mid-Term Exams - Early Dismissal 8:25 AM – 12:15 PM
  Horizon Science Academy Cleveland High School Events
Dec 15 Tue
- Mid-Term Exams - Early Dismissal 8:25 AM – 11:10 AM
  Horizon Science Academy Cleveland High School Events
Dec 16 Wed
- Mid-Term Exams - Early Dismissal 8:25 AM – 11:10 AM
  Horizon Science Academy Cleveland High School Events
- Department Meetings 2:35 PM – 3:30 PM (In Department Head classrooms)
  Horizon Science Academy Cleveland High School Events
Dec 17 Thu
- Make-up Mid Term Exams
  Horizon Science Academy Cleveland High School Events
Dec 18 Fri
- Last Day of First Semester - Grades Due
  Horizon Science Academy Cleveland High School Events
- Make-up Mid Term Exams
  Horizon Science Academy Cleveland High School Events
Dec 21 Mon
- Winter Break - No School & Building Closed 12/21/2026 – 1/1/2027
  Horizon Science Academy Cleveland High School Events
Dec 22 Tue
- Winter Break - No School & Building Closed 12/21/2026 – 1/1/2027
  Horizon Science Academy Cleveland High School Events
Dec 23 Wed
- Winter Break - No School & Building Closed 12/21/2026 – 1/1/2027
  Horizon Science Academy Cleveland High School Events
Dec 24 Thu
- Winter Break - No School & Building Closed 12/21/2026 – 1/1/2027
  Horizon Science Academy Cleveland High School Events
Dec 25 Fri
- Winter Break - No School & Building Closed 12/21/2026 – 1/1/2027
  Horizon Science Academy Cleveland High School Events
Dec 26 Sat
- Winter Break - No School & Building Closed 12/21/2026 – 1/1/2027
  Horizon Science Academy Cleveland High School Events
Dec 27 Sun
- Winter Break - No School & Building Closed 12/21/2026 – 1/1/2027
  Horizon Science Academy Cleveland High School Events
Dec 28 Mon
- Winter Break - No School & Building Closed 12/21/2026 – 1/1/2027
  Horizon Science Academy Cleveland High School Events
Dec 29 Tue
- Winter Break - No School & Building Closed 12/21/2026 – 1/1/2027
  Horizon Science Academy Cleveland High School Events
Dec 30 Wed
- Winter Break - No School & Building Closed 12/21/2026 – 1/1/2027
  Horizon Science Academy Cleveland High School Events
Dec 31 Thu
- Winter Break - No School & Building Closed 12/21/2026 – 1/1/2027
  Horizon Science Academy Cleveland High School Events