I am currently working in a building which is being converted from a former office block into a school. No expense has been spared - brand new fire doors, completely new compartmentation, comprehensive fire alarm system etc. etc. This a complete overhaul. I am wondering if the fitting of a sprinkler system (which there is) will mean that fire extinguishers will not be required?

No, it doesn't replace the requirement for extinguishers, a fire will still grow to a reasonable size in a room before the heads go. It can allow a reduction in scales, but there should still be extinguishers provided as per BB100 the Government design guide for fire safety in schools, concentrating on risk areas, e.g. CO2 & fire blanket to labs and food tech, Wet Chemical to main kitchens etc 

Thanks very much, I appreciate your time and reply.