Depending on the message of the song I feel it sounds good.
Nothing there is no difference to them at all
Light illuminate it during different ocasions and it was built with a steel skeleton
The passage describes the Author's impression of students participating in the "Upward Bound" program and it is generally favourable towards the program, without giving a more specific reason for this favourable opinion, it's more the author's personal impression.
Thus, we could say that the author has a positive bias towards the program.