Team liquid I have just read this post. I am sure I would also have felt very intimidated in that situation. I am glad you phoned the school - they will take the matter very seriously even though you couldn't identify the pupils and they will address it on a pastoral level through assembly at the very least.
I think, as you say, it was very likely 'high spirits' and the young people concerned would not have thought of the impact of so many surrounding just one person. I hope they already feel sorry for being so thoughtless.
As you say, the battle now is not to give in to the fear that this has triggered. It is very, very unlikely that it would happen again - you were very unfortunate to have the encounter.
Many years ago, I was walking home from work when a youth passed by me, then came up behind me and screamed as loud as he could in my face, just for the 'fun' of shocking me. I used to feel my heart race for several weeks afterwards, but there was never a repeat of this incident. I know it takes time, but the panicky feelings will fade.
xx 
What was directly across the road from the school you went to?
What made you fall in love with comedy?
Your next holiday must be to where the first holiday you remember , where are you going?g




