There is a 98 percent probability that enrolling in Democracy Prep produced positive impacts on both voter registration and voting¶

Claim · All claims
Evidence · 1 study · causal r? · q4
Currency · newest study 2018 · checked against its sources 2026-10-20 (automated, 1 of 1 entry) · not reviewed by a person

Subclaims¶

Reading the evidence codes

q is the design tier, i the impact, n the sample, and the kind with its r the rigour judged within that kind: what each code means.

This claim: no standardized effect is recorded in observations/ for it yet, so no benchmark reading is possible.

q4 i? The study finds a 98 percent probability that enrolling in Democracy Prep produced a positive impact on voter registration. → Brian Gill 2018 q4 i? The study finds a 98 percent probability that enrolling in Democracy Prep produced a positive impact on voting in the 2016 election. → Brian Gill 2018

Evidence¶

Brian Gill 2018¶

Brian Gill, Charles Tilley, Emilyn Whitesell, Mariel Finucane, Liz Potamites, Sean Corcoran. (2018). The Impact of Democracy Prep Public Schools on Civic Participation. Princeton, NJ: Mathematica Policy Research. https://www.mathematica.org/publications/the-impact-of-democracy-prep-public-schools-on-civic-participation

q4 · i? · causal · r?

Key findings from the lottery-based randomized experimental analysis. The report reports "a 98 percent probability that enrolling in Democracy Prep produced a positive impact" on both outcomes; no standardized effect size is printed.

"We find a 98 percent probability that enrolling in Democracy Prep produced a positive impact on voter registration, and a 98 percent probability that enrolling produced a positive impact on voting in the 2016 election."

Discussion¶

Learner Variables¶

Civic Mindedness — outcome: instruction changes it

Enrolling in Democracy Prep increases student voter registration rates by about 16 percentage points — related
Democracy Prep charter schools increase students' voting rates by about 12 percentage points in the 2016 election — related
Civic-education-focused schooling can boost civic participation in adulthood — a broader claim this one bears on
Democracy Prep charter schools boost student voting, according to the article's headline finding — a broader claim this one bears on
U.S. civic engagement and civics knowledge fall short of the democratic-preparation goal of schooling — related

Page metadata

Field	Value
`type`	`claim`
`id`	`democracy-prep-98-percent-probability-positive-civic-impacts`
`title`	`There is a 98 percent probability that enrolling in Democracy Prep produced positive impacts on both voter registration and voting`
`description`	`There is a 98 percent probability that enrolling in Democracy Prep produced positive impacts on both voter registration and voting`
`status`	`review`
`evidence_strength`	`moderate`
`newest_evidence`	`2018`
`source_checked`	`2026-10-20`
`generated`	by `process:wiki-ingest` on `2026-10-08`
`trust`	unverified — no one has confirmed this page's content
`sources`	1 — `brian-gill-2018`

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