Below is the template distribution for the PACE NSC question set, as of September 2015.
This distribution lists how many tossups/bonuses will be included from each category out of the 20 tossups and 20 bonuses in regular play per packet. For an example, 4/4 Literature indicates that there will be 4 literature tossups and 4 literature bonuses every packet. Fractions indicate that that category may not be represented equally every round. For an example, .75/.75 World Literature indicates that out of every 4 packets, 3 packets will include 1 world literature tossup, and 3 packets will include 1 world literature bonus.
4/4 Literature
1.125/1.125 American Literature
1.125/1.125 British Literature
1/1 European Literature
.75/.75 World Literature (including Classical Literature)
4/4 History
1/1 American History
2/2 European/British History
1/1 World History
4/4 Science
1.2/1.2 Biology
.7/.7 Chemistry
1/1 Physics
.2/.2 Astronomy
.2/.2 Earth Science
.45/.45 Mathematics
.25/.25 Computer Science
3/3 Fine Arts
1/1 Painting
1/1 Music
1/1 Other Fine Arts
3.5/3.5 Religion, Mythology, Philosophy, and Social Science
1/1 Religion
1/1 Mythology
.75/.75 Philosophy
.75/.75 Social Science
1.5/1.5 Current Events, Geography, and General Knowledge
.5/.5 Current Events
.5/.5 Geography
.5/.5 Miscellaneous/Other Academic/General Knowledge
Additionally, each packet will include 1/1 tiebreakers, drawn proportionally from all categories in the above distribution.