Md Nasar Alam

How can a mathematics teacher can teach chemistry for 12th student and the parents also expecting only one staff to teach all the subjects physics, chemistry, maths, biology?

Well I am 101% sure that in 12th standard a single teacher can't teach all the subjects. Mathematics teacher can teach you the Physics but for rest of the subjects you should go for other options. I strongly believe that 12th grade is a crucial period of your life so please consider different teacher for every different subject. As we talk about parents there are may be several other reasons behind to hire a single tutor for all subjects like as:- 1. Financial Issue = Not been able to provide other tutor as it is very expensive for parents. 2. Having a Strong Trust by parent only in one teacher & not ready to trust any other teacher. 3. Having a thought to avoid max. no. of tutor as it sometimes may result as Child's Exhausted or may be desired tutor is not living near your residence. 4. Bad Communication between Child and parent = Child is unable to explain parents that in which subject they needs tuition & in which subject it doesn't need it or vice versa. 5. Poor Self analyzing by Child to itself = Unable to find out its own true strength and weakness regarding studies by children. 6. Over Expectations = Sometimes parent think their children is having best mind then other according to them their children just need a little idea regarding any random topic & their child can grasp knowledge faster then any other one. 7. Misguidance = Wrong people Misguide your parents & most of them gave your parents a stupid, experimental, pathetic ideas regarding your studies