Standing,Young Adult Man,Mid-Adult Man,Group Of People,Indoors,Concentration,40-45 Years,people,Sitting,Chair,20-25 Years,Young Adult Woman,Learning,Teaching,Education,Leaning,University,Caucasian,Classroom,Study,Student,Lecture Hall,Teacher,Lecturer,Whiteboard,Professor,african american ethnicity,Mature Adult,university student,further education,California,Caucasian Appearance,medium group of people,40-44 years,20-24 years,Palm Springs,Riverside County –