Mark Your Calendars!

2025-2026 Calendar of Sessions & Breaks &
2026-2027 Calendar of Sessions & Breaks

Sessions & Breaks At A Glance

2025-2026 Calendar of Sessions & Breaks & 2026-2027 Calendar of Sessions & Breaks
  • 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 Tune Up 2026: August 3-14 (English/ math only)

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  • Session 1, 2026: 7 weeks, Aug. 24 – Oct. 9
    • No OSA classes on Monday, Sept. 7
    • Session break, no OSA classes: Oct. 12-16
  • Session 2, 2026: 8 weeks, Oct. 19 – Dec. 18
    • No OSA classes on Wednesday, November 11
    • Mid-session break, no OSA classes Nov. 23-27
    • Winter break, no classes: Dec. 21 – Jan. 8
  • Session 3, 2027: 9 weeks, Jan. 11 – March 19
    • No OSA classes on Monday, Jan. 18
    • Mid-session break Friday, Feb. 12 through Friday, Feb. 19
    • Session break, no OSA classes: March 22-April 2
    • Outdoor adventure with NatureBridge March 21-25
  • Session 4, 2027: 8 weeks, April 5 – May 28
    • No OSA classes on Monday, May 31
  • Imaginession 2027: June 1-3
  • Summer Session 2027: 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 2026-2027 Calendar of Sessions & Breaks is here: OSA Calendar 2026-2027

APRIL

  • 6th-17th: OSA Spring Break
  • 13th-17th: Outdoor Adventure in Yosemite
  • Monday, 20th: Pre-Registration for 2026-2027 begins for NEW students

MAY

  • Saturday, 2nd: Ignite a Spark Fundraiser at Art Trek! 6:00-9:00 PM
  • Friday, 15th: Talent Show/Guitar Jam/Bake Sale! 1:00-2:30
  • Monday, 4th: Imaginession Registration
  • Saturday, 23rd: Day trip to Santa Cruz Island!
  • Monday, 25th: Memorial Day (No OSA classes)
  • Thursday, 28th: Shakespeare Play! 4:00 PM
  • Friday, 29th: Session 4 ends

JUNE

  • 1st-3rd: Imaginession!
  • Friday, 5th: OSA Launch for 8th grade
  • Tuesday, 9th: Fall Parent Information Night, in person 7:00-8:30 PM
  • Thursday, 11th: Fall Parent Information Night via Zoom (7:00-8:00)
  • Monday, 15th: YMCA Summer Camp (6/15-8/14); programs available for 5th-10th grade

JULY

  • Monday, 13th: Pre-Registration begins
  • Monday, 27th: General registration begins, website updated with Session 1 schedule

AUGUST

  • 3rd-14th: Summer Tune Up (math and English tutoring), 9:00-12:30 daily
  • Wednesday, 19th: math assessments, new students
  • Wednesday, 19th: Campus beautification, 9:00-12:00
  • Thursday, 20th: Back to Class Picnic, 5:00-7:00 PM
  • Monday, 24th: Session 1 begins! (8/24-10/9)

SEPTEMBER

  • Monday, 7th: Labor Day (No OSA classes)