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Purdue University

Purdue University's course descriptions average 65.4 on the 100-to-0 ruler: clearly left of center. Across all 100 schools, the average is 67.5, so Purdue University reads 2.1 points further right.

Liberal (100)center (50)Conservative (0)
Purdue University: 65.4 (likely range 63.2 to 67.6) All 100 schools: 67.5 each other school in the comparison

Where its courses fall

2%Far left92–100
27%Left75–91
39%Center-left59–74
20%Center42–58
4%Center-right26–41
3%Right9–25
4%Far right0–8
202 plotted courses (the ones with a political subject). 100 = far left, 50 = the average American, 0 = far right. Subject places what a course studies, not the side it takes.

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Subject places what a course studies, not the side it takes. A course on slavery or the Holocaust lands far right and a course on Marx or the Soviet Union lands far left, whether the course praises, criticizes or simply describes it.

Underlined: words the model quoted from the description when we asked it, after scoring, to explain its score.

Furthest-left subjects

HIST 23900 · History Of Russia From 1861 To The Present100

History

00. This course surveys the paths of the Russian empire through economic modernization, social transformation, and World War I; the revolutionary regimes of Bolshevism, Leninism, and Stalinism; World War II and the Cold War; the collapse of…

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WGSS 32600 · Sex, Race, Class And Leadership100

Women's & Gender Studies

00. This course offers students opportunities to build practical skills in dismantling institutional, systemic, and structural manifestations of mutually reinforcing oppressions such as racism, classism, sexism, heterosexism and homophobia,…

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POLS Y3880 · Marxist Theory94

Political Science

00. Origin, content, and development of Marxist system of thought, with particular reference to philosophical and political aspects of Russian Marxism. Typically offered Fall Spring Summer.

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Furthest-right subjects

HIST 23005 · Hitler's Europe0

History

00. This course will examine the rise, seizure, and consolidation of power by the Nazi Party and will trace the development of Adolf Hitler from a provincial Austrian to dictator of Nazi Germany. Syllabus Available

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HIST 31102 · Holocaust And Modern Genocides0

History

00. This course examines genocide in the 20th century: first state-sponsored mass murder, systematic murder of Jews in Europe during World War II, regional differences in implementation of genocidal policies, memory and commemoration, the…

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HIST 37000 · The Holocaust0

History

00. A survey of the Holocaust form 1933 to 1945. The course includes analysis and historical descriptions of such topics as the background and nature of Nazi racism, Nazi persecution from 1933 to 1941, the Final Solution from 1941 to 1945,…

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Why this number, in plain words

Political lean of course descriptions. Average Framing score (0 = far right, 50 = center, 100 = far left) of the scored courses in the group.

50 is the survey-anchored center of US adults on each issue (the "moderate" place of the ANES/GSS/PRRI seven-label ruler), not the cohort midpoint; scores above 50 read leftward, below 50 rightward.

Counted: courses with a Framing score (categories L/R/B/C). The likely range (95% interval) is 63.2 to 67.6; a comparison whose range overlaps this one is not a reliable difference.

  • Most course descriptions carry no political lean at all and are not in this average; the "share described from the left" view counts them.
  • Readings are of catalog description text, not of teaching, syllabi or individual professors.
Purdue University by department (share of courses described from the left)
DepartmentLeft-framed shareCourses
Women's & Gender Studies23.5%34view
Sociology6.4%172view
Anthropology2.6%153view
English & Comparative Literature2.1%517view
History1.7%358view
Philosophy1.1%189view
Religious Studies1.1%95view
Psychology1.0%292view
Political Science0.8%258view
Art & Art History0%16view
Economics0%209view
Ethnic & African American Studies0%18view

Lean (mean Framing score) is not published per department within a school; only the left-framed share is. Department rows carry no interval.

Details: exact rows, definitions and method
NameMetricValue95% intervalnscored
Purdue Universitymean_bias_score65.463.2 – 67.62,31148
All 100 schoolsmean_bias_score67.567.4 – 67.7124,29010,124
Formula
SUM(bias_score) / COUNT(bias_score)
Interval
normal approximation: mean +/- 1.96 * sd / sqrt(n), sample sd (n-1); undefined when n < 2
Model / prompt / snapshot
gpt-5.6-sol · r12 (2026-10-16-le49-r12) · 6df50b10
Metric caveats
Scored courses only (L/R/B/C); N and I carry no score and are excluded, so n here is smaller than the group's course count. Scores are model readings of catalog description text against a fixed anchored definition, not teaching or syllabi. The interval covers sampling noise in the mean only; it does not represent model reading error. Every value carries a `method` label: exact_rows or histogram_midpoint.

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