The reason that this disorder should be studied in health class is because it is a life threatening disease, for both the host and others.  People with schizophrenia have the symptoms such as-

 

“...Hearing or seeing something that isn’t there, A constant feeling of being watched, Peculiar or nonsensical way of speaking or writing, Strange body positioning, Feeling indifferent to very important situations, Deterioration of academic or work performance, A change in personal hygiene and appearance, A change in personality, Increasing withdrawal from social situations, Irrational, angry or fearful response to loved ones, Inability to sleep or concentrate, Inappropriate or bizarre behavior, Extreme preoccupation with religion or the occult…” (MLA, Mental Health America).

 

As from personal experience, my grandpa has schizophrenia and has made serious death threats to my own grandma.  Now that he has gotten medical help he is much more calm and loving.