It is the result of a redesign effort of Oregon's K-12 education system that focused on graduation requirements.
Students are required to do a minimum of 24 credits for subjects such as English, Social science, mathematics, etc.
Students also have to meet Personalized Learning Requirements and Essential skills in Reading, Writing, and Math.
Individual districts might have slightly different requirements, such as Portland Public Schools requiring 2 years of world language as part of the elective section.
Individual School District's were not allowed in any circumstance to add or change requirements and were also not allowed to issue a District Diploma, they must issue an Oregon State Diploma.