wizard school spell slots filled with lower level spells?

[dwilhelmi]

For the specialist spell slot you are granted for each spell level, can you fill it with a lower level spell instead? Specifically, if I specialize in divination, none of the 1st level divination spells interest me terribly much; could I use that extra spell slot granted by my school, and fill it with a divination cantrip instead?

[My Self]

Arcane School wrote:

Each arcane school gives the wizard a number of school powers. In addition, specialist wizards receive an additional spell slot of each spell level he can cast, from 1st on up. Each day, a wizard can prepare a spell from his specialty school in that slot. This spell must be in the wizard's spellbook. A wizard can select a spell modified by a metamagic feat to prepare in his school slot, but it uses up a higher-level spell slot. Wizards with the universalist school do not receive a school slot.

I don't see anywhere where it says you are restricted to only preparing spells of that spell level. Spells slots can normally be used to prepare lower-level spells.

[QuidEst]

Sure, but a cantrip outside of a cantrip slot is single-use.