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.

School Supplies Needed:

Backpack or school bag                                                 

Three ring binder and notebook paper OR spiral notebook

Pencils with erasers

Pens (blue or black)2 different colored highlighters

Computer/laptop for online classes (chrome device is available for registered students)

Quick Links


GED Testing:  Mondays, Tuesdays, and Wednesdays from 10am-3pm. Contact your site GED specialist for more information.



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VoTech classes begin Thursday, October 7th.  Please contact your advisor to sign up or call us at 541-476-2524.


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Gardening classes begin Tuesday, October 5th.   Please contact your advisor to sign up or call us at 541-476-2524.


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

Office Hours: 





Mike Herzog, Principal

Zandra Siri, Office Manager

Upcoming Events

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SOSA Bell Schedule

Merlin Site


8:15-8:25  Breakfast 

8:25 -11:30  Online Edgenuity Classwork

10:45-11:30  Math Foundations (Direct Instruction)

11:30-12:15  Lunch

12:15-1:00  History (Direct Instruction)

1:00-1:50  Math (Direct Instruction)

1:50-2:30  Study Hall

2:30-3:00 PE

3:00 Leave for the day

Jerome Prairie- Tutor Sessions

Monday/Wednesday or Tuesday/Thursday 

10:00-12:00 Session 1 

1:00-3:00 Session 2

Illinois Valley

Monday/Wednesday or Tuesday/Thursday

10:00-12:00 Session 1

1:00-3:00 Session 2