Chaffey District Online High is a public online high school in Ontario, California. The Chaffey Joint Union High School District runs it. The school is for students in grades 9–12. If you want a more flexible schedule, you can take all of your classes online. There are about 150 to 200 students at Chaffey District Online High, and there is one teacher for every 20 students. Students take core subjects like math, English, science, and social studies, as well as optional classes that help them meet the requirements for graduation. The students at Chaffey District Online High come from diverse cultural and economic backgrounds, reflecting the vibrant community of Ontario. While current math and reading scores are not available, the school focuses on providing flexible and supportive online learning to help students succeed. Students may also take standardized tests like the SAT as part of their college preparation. Families who are thinking about schools sometimes go to sites like the best high schools in California to compare different programs. Chaffey District Online High is an online school that lets students finish high school while also taking care of other things.