The saga of scandal-plagued, Osaka-based Moritomo Gakuen, which advocated a nationalist education, has thrown the spotlight on private educational institutions in Japan and how they are operated.

While Japan's public elementary, junior high and high schools are often praised internationally for their quality, especially in math and sciences, many parents in Japan have long complained about a decline in standards and look to private schools to provide the type of education they feel their children need.

How many private elementary, junior high and high schools are there in Japan?