As I understand it the initial ICT investment under BSF is of the order of £1400 per student. This comes to less than £12m, not £16m. Therefore I suspect the contract covers more than just the schools, making it difficult to work out the spend per student.
The BSF figure is £1450 per pupil over 5 years.
£12.1m for Sunderland - £290/pupil/year
The LAs are free to spend more if the wish from their own budgets.