It is the best school in Cleveland. I want my daughters to receive a well-rounded foundation; one that will take them where they want to go in life. From here, they will be able to go to college and become the person they want to be. My oldest daughter graduated from Horizon in 8th grade. She is advancing very well and is now in her senior year of high school. I owe everything to this school!

Ame Keith-Oliphant


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9, PD Day - No School for Students
20, First Quarter Ends (49 Days)
23, First Quarter Grades due
25, Early dismissal at 12:21pm (Prof. Dev. for Teachers)
7, PD Day - No School for Students
22-24, Thanksgiving Break - No School
30, Parent Teacher Conferences II (3:00 pm-6pm)
20, Early dismissal at 12:21pm (Prof. Dev. for Teachers)
Dec 21-Jan 2, Winter Break
3, School Resumes
12, Second Quarter Ends (44 days)
15, Martin Luther King Day - No School
16, Second Quarter Grades due
31, Early dismissal at 12:21pm (Prof. Dev. for Teachers)
16, PD Day - No School for Students
19, Presidents’ Day - No School
20, Interim Grades due
22, Parent Teacher Conferences III (3:00 pm-6pm)
21, Early dismissal at 12: 21pm (Prof. Dev. for Teachers)
23, Third Quarter Ends (47 Days)
Mar 26 – Apr 2, Spring Break
3, School Resumes
5, Third Quarter Grades due
25, Early dismissal at 12:21pm (Prof. Dev. for Teachers)
4, Interim Grades due
22, Game Club Tournament till 3:20PM
23, Last Day for 8th Graders, 4th-7th Grade Field Trip to Fun N Stuff
24, 8th Grade Graduation 5PM-6PM at HSA Cleveland High 6000 S. Marginal Rd Cleveland,OH 44103
25, 5th-7th Grade Field Trip to Football Hall of Fame, Kindergarten Graduation at 9:30AM
28, Memorial Day- No School
30, 4th-7th Field Trip to Cleveland Zoo
31, Field Day, Last Day for Students, Early Dismissal at 11:30AM
May 31, Last Day of School for Students (45 days) (Students leave at 11:30)
June 1, Last day for teachers

Horizon Science Academy Denison School


Apply Now for K-8

Parents can apply to HSA Denison Middle online for all grades here.

Discover our School

Horizon Science Academy Denison is a public charter school serving K-8th grades that opened in 2004. We provide our students with an innovative world class education, rich in math, science and technology. Horizon Science Academy Denison focuses on preparing students to become bold inquirers, problem solvers and ethical leaders, with skills ready to meet the challenges of a competitive global workforce.


Horizon Science Academy Denison with Numbers

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We are currently accepting applications for Grades K-8 for the 2022—23 academic year.
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You can check your grades online via ConceptSIS database system.
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