Semester Schedules
SDI offers courses beginning each month for:
- Associate of Science in Firearms Technology Degree
- Certificate of Firearms Technology – Gunsmithing
Semesters are 16 weeks in length with courses of various lengths, typically 8-weeks and 4-weeks, within the semester.
SDI offers courses beginning every five to six weeks for:
- Associate of Science in Uncrewed Technology Degree
- Certificate of Uncrewed Technology – Aerial Systems
- Certificate of Firearms Technology – Handgun Specialist
Semesters are 20 weeks in length with 5-week courses within the semester.
For all programs:
The academic week begins at midnight Monday through 11:59 pm Sunday, Arizona time. Courses are therefore scheduled to begin on Mondays and end on Sundays, regardless of how any holidays fall.
2025 and 2026
Start Dates For 4 and 8 Week Courses
January 6, 2025
February 3, 2025
March 10, 2025
April 7, 2025
May 5, 2025
June 2, 2025
July 7, 2025
August 4, 2025
September 1, 2025
September 29, 2025
November 3, 2025
December 1, 2025
December 29, 2025
January 26, 2026
March 2, 2026
March 30, 2026
April 27, 2026
May 25, 2026
June 29, 2026
July 27, 2026
August 24, 2026
September 21, 2026
October 26, 2026
November 23, 2026
December 21, 2026
Start Dates For 5 Week Courses
January 6, 2025
February 10, 2025
March 24, 2025
April 28, 2025
June 2, 2025
July 7, 2025
August 18, 2025
September 22, 2025
October 27, 2025
December 1, 2025
January 12, 2026
February 16, 2026
March 23, 2026
April 27, 2026
June 8, 2026
July 13, 2026
August 17, 2026
September 21, 2026
November 2, 2026
December 7, 2026
The online classroom is available during holidays. However, the administrative offices will be closed during the holidays listed below. When the holidays fall on the weekend, SDI will typically align with the Federal observance, usually the Friday prior or the Monday following such holiday. Current students will be informed of specific office closures by email and/or website updates.
- New Year’s Day
- Martin Luther King Day
- President’s Day (Washington’s Birthday)
- Memorial Day
- Juneteenth
- Independence Day
- Labor Day
- Columbus Day
- Veterans Day
- Thanksgiving
- Thanksgiving Friday
- Christmas Eve
- Christmas Day
Online Classroom
SDI’s online classroom is generally available 24 hours a day, 7 days a week to provide the most flexibility to students.
Office hours
Monday – Friday 8:00 a.m. – 5:00 p.m. (Arizona time)
Note that Arizona does not switch to daylight savings time. Therefore, the office hours remain Mountain Standard Time year-round.
It’s something that I definitely am glad I was able to experience. They’re gonna get you ready for things that you wouldn’t think that you would even want to take on or aspects of the industry that you normally wouldn’t even have thought of doing. It’s a good experience. And if you want to be a gunsmith and it’s a field that you want to get into, it’s an invaluable tool that I don’t even think you should cut out.
Zach Brokaw2022 SDI Associate of Science in Firearms Technology Degree Graduate