Oakley's public education history began in 1862, when Sarah Sellers, one of the community's earliest settlers, established the original Iron House School. In honor of this rich heritage, the District named its first new school in more than 15 years Iron House Elementary School when it opened in 2006.

As the local economy recovered from the recession, Almond Grove Elementary School opened in 2014 to serve the District's growing student population. Summer Lake Elementary School followed in 2021, further expanding educational opportunities for Oakley families. Today, the District serves students through seven elementary schools (Grades TK–5) and two middle schools (Grades 6–8), all operating on a modified traditional (MT) school calendar. Upon promotion from eighth grade, students attend Freedom High School in the Liberty Union High School District.

The District's growth has been made possible through the continued support of the Oakley community. In November 2004, voters approved Measure H, providing funding for the construction of Iron House Elementary School and Almond Grove Elementary School, as well as the modernization of Oakley Elementary School and Gehringer Elementary School. In November 2016, voters approved Measure W, providing funding for the construction of Summer Lake Elementary School which opened in 2021.

As residential development continues throughout the community, Oakley Union Elementary School District remains committed to planning for future growth. The District continues to evaluate long-term enrollment trends and infrastructure needs to ensure it can provide high-quality educational facilities and programs for future generations of students.

Above all, the District is dedicated to providing exceptional educational opportunities for every student. More than 600 certificated and classified employees serve over 5,000 students with professionalism, dedication, and care. Together, they foster a safe, welcoming, and inclusive learning environment that encourages academic excellence, personal growth, and lifelong success.