Best HP laserjet printer for High Scool Library

I am purchasing new printer for all school libraries in my city.   We have 14 schools and thousands of students and staff.  So the Load on these printers is going to be extreme.  Can you recommend a few models of HP laserjet printers that can handle the Load with grace?   Each printer will probably print 40,000 + pages a year.  
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You haven't said whether you want colour or not?  Do you want it networked?  What about duplex printing?

You say 40,000 pages a year.  That figure seems very low as it would indicate that you are only printing around 1000 per week (don't know how many school weeks you have in the US, but in the UK we have 40) which would indicate around 200 per day which seems very very low.
ForLoop5Author Commented:
I suppose that is a low number.  Hmm.  I didn't quite think about it.  I  only glanced at the total page output on one of the printers currently there and estimated the usage by the amount of time it has been there.    

The printers are used 6 hours a day 5 days a week for about 40 weeks a year.  I need then networkable.   I would like Duplexing.  And if you could recommend a color printer and a black and white printer.  
Black and White - HP LaserJet P4015dn printer (
Colour (spelt properley :) lol) - HP Color LaserJet Enterprise CP4525dn Printer (

Get the second paper tray option (gives a capacity of around 1000 pages) - and being HP, you get education discount as well.

However...make sure you understand the running costs of the colour printers as they can be expensive.

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