teacher collaborates with colleagues. back to school and education concept. young teacher near chalkboard in school

academic back beard bearded behaviour blackboard blond campus chalkboard class classroom collaborates colleagues college concept couple day discipline education educational first friendly friends friendship girl girlfriend handsome high knowledge learn learner learning lector lecture lesson lifestyle look male man mathematics nerd professor school science scientist social space student students study support talk teach teacher teachers teen teenagers text tutor tutorship university vintage woman young youth