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.

We serve grade levels 6-12 and have a maximum enrollment of 300. If you think that you, or your student would benefit from this kind of educational experience, please contact us at 541-476-2524.

Quick Links


Congratulations SOSA Class of 2022!


Summer Office Hours:

June 13 through June 30, 2022

Monday - Thursday / 8:00am - 12:30pm


The office will be closed from July 1 through July 31, 2022 and will

reopen on August 1, 2022.


Transcript Request:

If you need an official transcript during our summer break, please send an email to: [email protected]


Supply List:





GED Testing:

Mondays, Tuesdays, and Wednesdays from 10am-3pm.

Contact your site GED specialist for more information.



This is the image for the news article titled SOSA Registration 2022-2023 Opening June 1st
SOSA Registration 2022-2023 Opening June 1st
Registration for 22-23 School Year for Current and Incoming SOSA Students
Read More about SOSA Registration 2022-2023 Opening June 1st

Office Hours:

Monday-Thursday / 7:30-3:30pm


Mike Herzog, Principal Zandra Jansma, Office Manager



Upcoming Events

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SOSA Bell Schedule

Merlin - High School


8:25-9:30 Edgenuity Work

9:30-10:25 US History (Direct instruction)

10:25-11:20 Math 1 (Direct instruction)

11:20-12:00 Lunch (Lunch room 11:20-11:40)

12:00-12:45 Math II (Direct Instruction)

12:55-1:40 World History (Direct Instruction)

1:50-2:30 Study Hall

2:30-3:00 PE (Direct instruction)


Merlin - Middle School


8:25-9:10 Social Studies (Direct Instruction)

9:10-9:55 Science

9:55-10:05 Break

10:05-11:00 Math (Direct Instruction)

11:00-11:40 Lunch (Lunch room 11-11:20)

11:40-12:30 Language Arts

12:30-1:40 Electives  

1:40-1:45 Break

1:50-2:00 Study Hall

2:00-2:30 PE (Direct Instruction)

2:30-3:00 Study Hall

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