In reply to climbercool:
It's good and the general message is very good. If you want pedantry:
The only things I spotted that are 'wrong' are in the sentence,
"I am still a keen sports person and would
be to share my enthusiasm for the sports I enjoy by coaching sports teams and running outdoor pursuit activities in any
school i was to work"
the first bit you are missing a word, 'keen' would be ok but you already used it so maybe just say "would love to". Something needs to go in there anyway.
The second bit, maybe you can 'work a school' but it's a very strange way of putting it, could say, "in the school environment," or lots of options.
Other points are just my opinion:
You start 2 consecutive sentences with "During this placement". They already know the context in the second sentence so you can just scratch those 3 words.
"upon/with," choose one or the other
"enlightening revelation," not quite a tautology but I'd choose one word or the other
"I finished this job to go and work as a qualified kitesurfing instructor," my point will wind people up but I think if you left teaching because you wanted to go kitesurfing, that's fine but don't celebrate it when re-entering teaching. You could have a more positive spin like,"Following this I went travelling to Australia where I took work as a kite-surfing instructor. This was an opportunity to be the sole instructor for a group of students."
The sentence, "Again it was..." is fine but could be better, more positive in tone, e.g. "I found far greater reward working with the children, which has reinforced my desire to train as a scool teacher"
"During my time at school," is ok but slightly ambiguous. I'd prefer,"During my time as a student".
"However having experienced the rewarding nature of truly inspiring a young person this has assured me that teaching is the right career for me," is ok but could use a comma or two. How about, "Experiencing the rewards of truly inspiring a young person has assured me that teaching is the career for me".
Final sentence is ok but could be snappier and stronger, "would allow me to make a positive influence...[yawn]". Let's down the energy of the rest of the statement.
n.b. I'm not a teacher or an English graduate or qualified very much to comment