Chaffey Joint Union HSD

Learn more about the impact of Horizon Education courses on SAT score improvement

Site Profile


Ontario, California

Number of High Schools

8 High Schools

District Enrollment

25,000 Students


Hispanic - 54%  
White - 26%  
Asian - 10%
African American - 7%
Two or more - 2%

Assessment Taken


Readiness support overview

Supporting Students on the SAT

The Chaffey Joint Union High School District is the 3rd largest union high school district in California, supporting over 25,000 students in grades 9-12. Horizon Education has been a partner of CJUHSD since 2015 and this year CJUHSD expanded their after school SAT readiness support programs to include school day College Prep Elective - SAT Course integration.

For the 2018/19 school year, CJUHSD partnered with Horizon Education to provide SAT prep support to all 8 comprehensive high schools. The program entailed providing Professional Development to 27 CJUHSD teachers. Horizon Education provided the teacher training, curriculum, assessments, and reporting for all participating teachers to run their own stand-alone SAT readiness course (before or after school).

Course Overview

  • Six week before-school or after-school readiness course
  • 15+ hours of prep instruction
  • 3 practice SAT assessments with comprehensive student and classroom level score reports
  • In-person professional development training for 27 CJUHSD teachers
  • 87% of students increased their total SAT score by completing the readiness course

Score Improvement by Race/Ethnicity

Score Improvement by LangFlu