<b>Caption from LIFE.</b> During a social studies class, Cheryl Gue, 17, quiets her son Michael with a bottle. Although the sound of crying babies is a normal disruption at Citrus, the more vocal ones are usually hustled out of class. The school is equipped with playpens, cribs and toys. The mothers are required to come to school for the morning child-care courses, but may study academic subjects at home.