The traditional increase across all schools' operational funding will be frozen to make the changes.
It will freeze operations funding to make the changes. The funding works out at around $4 per week per student affected.
The policy has been read as further evidence the government does want to shift education funding to a more targeted approach, with documents leaked to the Herald earlier this year showing it planned to fund on students' risk of failure, rather than decile rankings.
The documents show treasury twice told Mr English it would not recommended the targeted funding for next year, the first time on March 1, and again on March 17.
The second time, after it had more detail, it felt the policy was " implementable from 2017" but said "depending on the outcome of the Funding Review, you would likely need to transition to a different targeting mechanism post-2017."
It again warned about how the decision would be interpreted.
Further paragraphs in the document were redacted, however it's unclear if they related to the same decision, or other budget advice.
Treasury officials also warned there was "weak evidence" of the impact of additional teacher aides on student outcomes. However it said their effectiveness was dependent on implementation and practice decisions.
The Government went on to fund support for an extra 1250 students with a $15.3 million increase for in-class support.
The documents can be viewed here.