Mark Your Calendars!

Sessions & Breaks At A Glance

  • Session 1, 2018: 7 weeks, Aug. 27-Oct. 12
    • No OSA classes Sept. 3
    • Session break, no OSA classes: Oct. 15-19
  • Session 2, 2018: 8 weeks, Oct. 22-Dec. 21
    • No OSA classes on Monday, Nov. 12th
    • Mid-session break, No OSA classes Nov. 19-23
    • Winter break, no classes: Dec. 24-Jan. 11
  • Session 3, 2019: 9 weeks, Jan. 14-March 15
    • No OSA classes on Monday, Jan. 21, or Feb. 15th, 18th
    • Session break, No OSA classes March 18-22
  • Session 4, 2019: 8 weeks, March 25-May 31
    • Mid-session break, April 15-26
    • Outdoor Adventure with NatureBridge, Apil 14-19
    • No OSA classes Monday, May 27
  • “Session 5” Imaginession 2019: June 3-6

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, due to our rental agreement for use of the Teen Center during non-operational hours. Classes for OSA are closed on national or observed legal holidays, not necessarily religious holidays.

A full calendar of Calendar of 2018-2019 Sessions and Breaks is available here: OSA Calendar 2018-2019.


  • Sunday, 21st: Rotary Club Street Fair. OSA will have a booth!
  • Monday, 22nd: Session 2 begins (8 wks, 10/22-12/21)
  • Tuesday/Wednesday, 23rd/24th: Picture Days, 10:30-11:15
  • Wednesday, 31st: Halloween at OSA.


  • Wednesday, 7th: Drumming Night with John Lacques at Art Trek! Details and registration here.
  • Monday, 12th: Veteran’s Day. No OSA classes.
  • Friday, 16th: Generosity Campaign (our annual online fundraiser), 11/16 through Dec. 31.
  • Friday, 16th: 8th annual OSA “Giving Thanks” Feast. noon-2:00.
  • 19th-23rd: Mid-Session break. No OSA classes on site.


  • Tuesday, 4th: Winter Parent Meeting. For details, go here.
  • Wednesday 12th: General registration for Session 3.
  • Friday, 21st: Last day of Session 2.
  • 24th- January 11: Winter Break. No OSA classes on site. Some field trips may be arranged for January.


  • 7th-11th: OSA still on Winter Break, some activities may be planned this week. (Local schools back in session)
  • Monday, 14th: Session 3 begins (9 wks, 1/14-3/15)
  • Monday, 21st: Martin Luther King, Jr. remembered. No OSA classes.


  • Parent Meeting for Outdoor Adventure participants (date TBD, likely 2/5 or 2/6)
  • Thursday, 14th: Love is in the Air evening of art at Art Trek. Details coming soon.
  • Friday, 15th and Monday, 18th: President’s Day observed. No OSA classes.

MARCH 2019

  • Wednesday 6th: General registration opens for Session 4.
  • OSA Family Tours for 2019-2020, dates TBD
  • Friday, 15th: Session 3 ends.
  • 18th-22nd: Session break. No OSA classes. Some off-site activities may be planned.
  • Monday 25th: Session 4 begins (8 wks, 3/25- 5/31)

APRIL 2019

  • Sunday, 14th- Friday, 19th: OSA on 2019 Outdoor Adventure with NatureBridge!
  • 15th-26th: Mid-session break. No OSA classes on site.

MAY 2019

  • Saturday, 4th: Spring Fundraising event! 6:00-10:00 pm. Details TBD.
  • Wednesday 15th: General registration for Imaginession.
  • Monday, 27th: Memorial Day. No OSA classes.

JUNE 2019

  • 3rd-6th: Imaginession!
  • 2019-2020 Parent Information Meeting, 2nd week of June. Date TBD.
  • Friday, 7th: 2019 Launch