welcome to SOSA!

SOSA is an alternative education charter school. We currently have three sites located throughout the district to serve the students of Three Rivers School District: Illinois Valley site, Jerome Prairie site and Merlin site. Being a charter school, we are also able to service students from other districts.

With a broad range of student needs, situations and schedules, the staff at SOSA strive to offer students an educational experience that is more individualized and diverse. From lower class sizes, which provides more one-on-one direct instruction, to online course offerings, our students have a vast menu of experiences and opportunities available for them.

If you think that you, or your student would benefit from this kind of educational experience, please contact us.

Quick Links


This is the image for the news article titled SOSA Registration 2021-2022 Now Open
SOSA Registration 2021-2022 Now Open
Current and Incoming SOSA Students may now register for the 2021-2022 school year.
Read More about SOSA Registration 2021-2022 Now Open

Summer Office Hours: 

The office will be open on the following dates:

June 14 - 25, 8:00 am-2:00 pm

June 28 – July 30, the office will be closed

  August 2 - August 27, 8:00 am-2:00 pm

* During the month of July, please e-mail michael.herzog@threerivers.k12.or.us if you need something (such as transcripts) and he will get back to you as soon as he can.



Mike Herzog, Principal

Zandra Siri, Office Manager

Upcoming Events

    No events found.
Sunday Monday Tuesday Wednesday Thursday Friday Saturday
May 30, no events311June 02, no eventsJune 03, no eventsJune 04, no eventsJune 05, no events
June 06, no eventsJune 07, no eventsJune 08, no eventsJune 09, no events10June 11, no eventsJune 12, no events
June 13, no eventsJune 14, no eventsJune 15, no events16June 17, no eventsJune 18, no events19
20June 21, no eventsJune 22, no eventsToday, June 23, no eventsJune 24, no eventsJune 25, no eventsJune 26, no events
June 27, no eventsJune 28, no eventsJune 29, no eventsJune 30, no eventsJuly 01, no eventsJuly 02, no eventsJuly 03, no events


SOSA Bell Schedule

Merlin SITE

Monday/Wednesday or Tuesday/Thursday

7:00-8:00 Teacher Prep

8:00-9:00 Morning Office Hours

9:00-11:45 Session 1 (Groups A and B)

Break in classroom 10:40-10:50

11:45-12:45 Lunch

12:45-4:00 Student/Parent Support

Jerome Prairie and Illinois Valley SITES

Monday/Wednesday or Tuesday/Thursday

7:00-8:00 Teacher Prep

8:00-9:00 Office Hours

9:00-10:00 Google Meets

10:00-12:00 Session 1

12:00-1:00 Lunch

1:00-3:00 Session 2

3:00-4:00 Office Hours

4:00-4:45 Calls/Daily Wrap Up