أنشئ حسابًا أو سجّل الدخول للانضمام إلى مجتمعك المهني.
It's a rare attitude as normally we don't see it in educational institutions. If it happens, simply ignore their attitude and concentrate on developing your teaching abilities.
If you got succeeded in delivering better, they'll get convinced psychologically and will mend their attitude.
who cares..u do ur own stuff