Nola is a fabulous teacher, there's a reason she's held her position for so long. Her knowledge and experience mean her students have the best chance of succeeding should they apply themselves.
I understand other students didn't appreciate some of her remarks but I felt they failed to realise she had their best interests in mind. Yes, she can be bias but be realistic; she won't reward you for pissing around in her class.
She was easily the most disliked staff member at Wanganui High School. She would use favouritism and special treatment for students who didn't accidentally rub her the wrong way and was unfair and excessive in treatment to other students.