HELP, sat writing practice, can I get some feedback?

Is a teacher who has a great knowledge of the subject matter the best kind of teacher? To me/In my opinion, the answer is no, what's of chief importance is not how much a teacher knows about what he is teaching, but the way that this knowledge is transported conveyed/presented/transferred to the students.
Having myself (closer to the verb) been taught by many different (redundant) kinds of teachers in school myself, I can safely say that it was from those who tried to connect with their students, by using examples from real life our living environment and joking around, that I learned the most (from needs to be closer to its object 'those')  from.
What is so effective about this teaching method is are the eagerness to teach, and the will to connect with students, because people will listen better if they feel understood and respected by the person trying to talk to them.
Knowing your subject is - needingless to say (why say it then?) - a necessity, however, knowing every little detail by heart is not. This ('this' refers to what?) Being an expert in the subject could lead to teachers just blurting out everything they know in a somewhat boring way, resulting in uninterested students. (disagree!  the knowledge and the style are not related - would you say the less you know the better?)
Moreover, they (again the pronoun is far from what it refers to) students will probably drift off into a daydream as the lecture goes on because they are not actively involved in the lesson, which is a key to gaining the attention of the students.
Finally, a teacher that makes a mistake from time to time, gives students someone to relate to; it shows them that it's ok to be wrong and that it happens to everyone.
As a In conclusion I believe that the best kind of teacher is one that actively involves students in the lesson, teaches in a way that relates to the students, and doesn't just hold give one long monologue, packed with excessive information, for the students to process. To achieve this, it is not necessary to be the most knowledgeable person about the subject in the world. (not necessary, but still useful)