Ours is oging up from 4k to 6.5k however although in some part due to the loss of HT grant the LEA are replacing all the fibre to schools this year as BT have stated that they won't be able to support it much longer in it's current state (old not because of problems which thankfully are few and far between). The new contract will include SDL copper line as well for backup purposes with speeds from 2 - 20mb for the copper and 10 - 100mb for the fibre even the 100mb is only around 11k a year so it's a good deal as we get filtering etc included. I haven't found a cheaper option anywhere I can match the cost for 10mb but once you add filtering its out the window