Moving Footage of a Row of Multi Ethnic Students in the Classroom Taking Exam/ Test/ Writing in Notebooks

education training class educational exam education classroom pen student post-secondary education seminar teaching desk school building university professor laptop hd campus group note pad learning modern organized group young adult studying writing technology auditorium adult sitting asian multi-ethnic group lectern african ethnicity hispanic people estonia 4k variation women ethnicity indian talking listening latin american indoors caucasian wireless