Deletion of School hygiene

Comment: AFD is not cleanup.  It is our |policy to improve weak starts not to delete them.  It is quite easy to find more sources such as the ''Encyclopedia Britannica'': "SCHOOL HYGIENE AND PHYSICAL EDUCATION form very important branches of public hygiene in the United States. ... School hygiene may be divided into four main branches: (1) Sanitation of school-houses and school grounds
Stance: keep
Cited policy: Wikipedia:Editing policy (WP:IMPERFECT)