Opposition schools when dealing with cross-class.

[Gluttony]

Perhaps this is addressed somewhere and someone can tell me what the answer is:

Would a cross-classed wizard/other spellcasting class be able to prepare/cast spells from their opposition school without penalty when using their other class' spell slots.

For example a wizard/druid with divination as an opposition school; would they be able to prepare and cast their druid spells of the divination school like detect magic without penalty despite the opposition school.

(Yes I know, multiclass spellcasting, bad idea, etc. etc.)

[sunshadow21]

If they prepared it as a druid spell, there would be no penalty. If they prepared it as a wizard, there would be a penalty. The druid class comes with it's own restrictions (no metal armor, etc) and would be unaffected by those limiting the wizard slots that are derived from the class (like school specialization).

[Theconiel]

As far as I can see, the importance of schools of magic applies only to wizards. If my understang is correct, using a druid's spell slot for a divination spell would not carry any penalty. Nor would a druid spell rom the wizard's favored school carry any benefit.