Jakkedin |
No. You would not get a +1 to saves for all wizard schools. You get a +1 to saves for all spells of the Universal School. And, doing a quick search, the list of spells of the Universal school includes:
Arcane Mark
Ascension
Collaborative Thaumaturgy
Limited Wish
Permancy
Prestidigitation
Wish
* search done on Archives of Nethys site
So really not worth it choosing the Universal School.