Are there any mistakes in this?
438823
School's is correct, it is showing possession. Schools' would be showing plural possession. The sentence appears to be correct.
155021
Manager are not expected to make mistakes but as you all know that humans make mistakes.  Yes they can make mistakes but not expected to make them because of their experience in that professional field you should leave no room for mistakes.  It is bad business and doen't set a good model for your co-worker's or employee's to think that is ok but it does happen the outcome can be at a loss of monies.
593098
check it.\nMay be it is useful
716118
if don king did it, it has to be good\n\nok ok upon further research i see that that was not a typo and here are some sites:
276720
i believe u make a mistake/error ... try to do it again
987390
Are you sure you've written out the coeffients correctly. Please repost.
431531
Don't know.  Trial and error?
1129646
The correct result happened.\n\n...
20714
Perhaps we should earn points for correcting spelling mistakes in the question... Thanks to Konqueror's inline spell checking, I don't make mistakes myself any more (cue people jumping to prove me wrong).\n\nOh yeah, and thanks for stealing my electroshock keyboard idea; I've been advocating that one for ages!
474807
what type of errors  u r getting. whatever it is, it is safe to delete errors always. dont worry.
214596
Is  There Something Wrong?
999090
is this not ridicules?
332446
false; \n\nmany English mistakes in this sentance , take out the 'of' for a start, should be brother and sister not 'or' no need to go on i think.
118781
one about correct comma placement?
301600
I THINK every one learns from it's mistakes, so be cool and relax u should be thank full to your self that u commit ed a mistake that will learn you much in your life. if such situation arises in near future u will be well prepared for it.
586531
Is there an actual question here?
539499
If its done correctly then no