Can you please check if the following sentences are possible, please?

Thank you very much.

1) Th scene takes place in a classroom of M'Choakumchild school.
2)It is a whitewashed room, in which the boys and the girls are sitting in two compact bodies divided up in the centre by a narrow interval (how can I simplify this? They are separated from one another by a space in the middle?)
3) Mr Gradgrind is teaching his schoolchildren the importante of facts.
His surname is symbolic of (for) the utilitarian philosophy he embodies.
4)Actually, he believes that any parcel (synonym?) of human nature can be measured and weighed through arithmetic figures. Nothing can dissuade him from this belief.
5) He refers to his pupils as little pitchers who were to be filled with facts.
6)He is compared to a cannon loaded to the muzzle with facts "and prepared to blow them clean out of the regions of childhood at one discharge". (How can I rephrase it?)
7) He picks on a new pupil, calling her "girl number twenty". He usually refers to his pupils either with their number or by (?) their bare surname. (He addresses his pupils with their numbers in the class register, is possible?)

1) TH = The

Is "school" part of the name?

2) space in the middle, would be MY choice

3) symbolic OF

4) fact, bit, part?.....arithmetical (clarifies it as ONLY an adjective)

5) aha! maybe you DID mean "pitchers" above

6) "and blow them clean out of childhood?" If you change it too much, no one will "catch" the expression?

7) by or with = you already have with, so by denotes it's different

Yes, the other is possible.

Sra