An all-through school (also known as an integrated school) educates young people throughout multiple educational stages, generally throughout childhood and adolescence.

The term "all-through" can be legitimately applied to establishments in many different circumstances, but one commonly accepted definition is "schools which include at least two stages of a young person's education within the one establishment".

Private educational institutions in the Philippines can offer multiple educational stages.

Examples include De La Salle University, the University of the East, Gingoog Christian Colleges and San Beda University, which operate both basic education and higher education programs.

Other private schools may offer both forms of secondary education, such as APEC Schools, or all forms of basic education from preschool to senior high school, such as Ingenium School.

Philippine state schools at the university level are generally forbidden from offering basic education due to the separation of regulatory duties between the Department of Education and the Commission on Higher Education. A short, multi-year exemption was made during the implementation of the K–12 education curriculum to temporarily accommodate incoming senior high school students.

The University of the Philippines is a state university system that operates basic education campuses. These include the UP Integrated School, University of the Philippines High School Iloilo and University of the Philippines Rural High School.

The NUS High School of Math and Science is a specialised high school under the National University of Singapore, which serves as the only high school in Singapore to be supported by a parent university.