Mark Your Calendars!

2024-2025 Calendar of Sessions & Breaks
2025-2026 Calendar of Sessions & Breaks

Sessions & Breaks At A Glance

2025-2026 Calendar of Sessions & Breaks
  • Session 1, 2025: 7 weeks, Aug. 25 – Oct. 10
    • No OSA classes on Monday, Sept. 1
    • Session break, no OSA classes: Oct. 13 – 17
  • Session 2, 2025: 8 weeks, Oct. 20 – Dec. 19
    • No OSA classes on Tuesday, November 11
    • Mid-session break, no OSA classes Nov. 24-28
    • Winter break, no classes: Dec. 22 – Jan. 9
  • Session 3, 2026: 9 weeks, Jan. 12 – March 30
    • No OSA classes on Monday, Jan. 19
    • Mid-session break Friday, Feb. 13 through Friday, Feb. 20
  • Session 4, 2026: 8 weeks, March 23 – May 29
    • Mid-session break (Spring Break), April 6-17
    • Outdoor adventure with NatureBridge April 13-17
    • No OSA classes on Monday, May 25
  • Imaginession 2026: June 1-3
  • Summer Session 2026: TBD

Upcoming Dates to Remember

Please check back frequently as this page is updated regularly.

The session schedule for One Spark Academy (a “Learning Center”) follows the calendar for the local district, CVUSD. Classes for OSA are closed on national or observed legal holidays, not necessarily religious holidays.

A PDF of the 2025-2026 Calendar of Sessions & Breaks is here: OSA Calendar 2025-2026

APRIL 2025

  • Thursday, 3rd: OSA Tour
  • Wednesday, 9th: OSA Tour
  • Thursday, 10th: OSA Tour
  • Friday, 11th: OSA Talent Show & Bake Sale
  • 21st-25th: OSA Spring Break

MAY 2025

  • Saturday, 3rd: Ignite a Spark Spring Fundraiser at Art Trek
  • Wednesday, 7th: OSA Tour
  • Thursday, 15th: OSA Tour
  • Saturday, 17th: Day trip to Santa Cruz Island!
  • Monday, 26th: Memorial Day, no OSA classes
  • Thursday, 29th: 5:00 Shakespeare performance Much Ado About Nothing 
  • Friday, 30th: Last day of Session 4

JUNE 2025

  • 2nd-4th: Imaginession, 9:00-1:00
  • Thursday, 5th: 8th grade Launch (TBD)
  • Tuesday, 10th: Parent Orientation Mtg. for Fall, 2025, 7:00 pm in person
  • Thursday, 12th: Parent Orientation Mtg. for Fall, 2025, 7:00 pm on ZOOM

JULY 2025

  • 14th-25th: Summer Session!
  • 21st-25th: Pre-Registration week for 2025-2026

AUGUST 2021

  • Monday, 4th: General Registration for 2025-2026
  • Tuesday, 19th: 9:00 Math assessments (if needed), Campus Beautification morning
  • Wednesday, 20th: Welcome Back picnic 4:00-7:00
  • Monday, 25th: Session 1 begins