Officials said that the total increase in troops could take three or four months.
The increase will take effect by the end of 2008.
Another increase, of 3 percent, will take effect in October.
This increase of more than half a million will take the primary school population to its highest level since the late 1970s.
But the fastest increase took place among women who had never been married.
The theoretical increase from $3,100 to $3,700 takes effect in the following year.
If the tickets were bought before the increase took effect, it is not added later.
The same increase, from one to seven, took place in Dallas.
If approved, the increases would take effect on March 31.
But, he added, even the recent increase "did not take us where it should have."