A privately run school or educational institution (not government-run), such as private elementary, secondary schools, or universities.
彼女は私学の高校に進学した。
She went on to a private high school.
私学は授業料が高いことが多いが、特色ある教育を行っている学校もある。
Private schools often have high tuition, but some offer distinctive educational programs.
政府は私学への助成金を検討している。
The government is considering subsidies for private schools.