Young students attending class

5 people academic studies academic study alertness alert appearance apprentice position apprenticeships apprenticeship assignment attending attend attention attentiveness attentive auf buildings building campuses campus classes classrooms classroom class conferences conference consider construction contemplate contemplative courses course deliberate demonstrations demonstration earnest educational institutions educational institution educational system education exercises exercise field of education fields of education five people halls hall hearing hear knowledge learning learn lectures lecture lessons lesson listen looks look means of transportation means of transport mind muse musing paying pay pensively pensive perched performance act performance pondering ponder practice practicing practise presentation railroad rail traffic railway reason routine school class school lesson schools school seminars seminar seriously serious severe shows show sitting sit structure students student studying study tasks task teachers teacher teaching thinking think thoughtful thoughts thought trainings training trains train transportation transports transport university campus university grounds watchful works out write writing