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Los Osos High School Supplies List 2025-2026

School Name: Los Osos High
School Address: 6001 Milliken Ave Rancho Cucamonga CA 91737
School District: Chaffey Joint Union High
County: San Bernardino County

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The school supplies list information provided on this website is a general or comparable school supplies list. It is only a recommended list and may or may not exactly match the school supplies your child needs. We suggest that you contact your school to get a more specific school supplies list, and or email your child’s teacher to find out exactly what they will need for the upcoming school year before you purchase your school supplies.

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