Universal spells may be used by all wizards and sorcerers, and may not be one of the chosen schools for specialization, either to remove or to boost. Essentially, it contains all of the spells that don't fit in any other school. It's a small school in the SRD, but other books add to it.
Pages in category "Universal School"
The following 6 pages are in this category, out of 6 total.