tutor asking high school students in class

1080 1080p 1920 1920x1080 2160 3840 3840x2160 american book casual caucasian class classroom college communicate consult desk discussion education encouraging exam explain group hand happy helping hold indoors knowlage lecture lecturer lesson male man people person professor read school smiling stand standing student studying subject talk talking teacher teen teenage teenager theme together touchscreen tutor uhd university video working