Modeling Assumptions Clash with the Real World: Transparency, Equity, and Community Challenges for Student Assignment Algorithms
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Across the United States, a growing number of school districts are turning to matching algorithms to assign students to public schools. The designers of these algorithms aimed to promote values such as transparency, equity, and community in the process. However, school districts have encountered practical challenges in their deployment. In fact, San Francisco Unified School District voted to stop using and completely redesign their student assignment algorithm because it was frustrating for families and it was not promoting educational equity in practice. We analyze this system using a Value Sensitive Design approach and find that one reason values are not met in practice is that the system relies on modeling assumptions about families’ priorities, constraints, and goals that clash with the real world. These assumptions overlook the complex barriers to ideal participation that many families face, particularly because of socioeconomic inequalities. We argue that direct, ongoing engagement with stakeholders is central to aligning algorithmic values with real world conditions. In doing so we must broaden how we evaluate algorithms while recognizing the limitations of purely algorithmic solutions in addressing complex socio-political problems.
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Differing socio-technical imaginations of public-sector algorithms are consistent with existing literature.
“Differing socio-technical imaginations of algorithms in the public sector are aligned well with existing literature [20,62,103,107,112].”
From A Framework of High-Stakes Algorithmic Decision-Making for the Public Sector Developed through a Case Study of Child-Welfare (2021) · cites this paper as [103]
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“Transparency information about the algorithm itself may also reduce stress and increase trust in the system, but only if this information is clear and useful [18, 52, 61].”
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“It can involve explanations [112] to stake-holders about data collection, algorithmic function [100], and sys-tem limitations, and is linked to informed consent [93] and respect for autonomy [28].”
- Authors
- Robertson, S., Nguyen, T., & Salehi, N.
- Affiliations
- University of California, Berkeley (US)
- ORCID
- Salehi, Niloufar
- Venue
- Proceedings of the 2021 CHI Conference on Human Factors in Computing Systems
- Publisher
- ACM
- Published
- 2021-05-06
- Pages
- 1-14
- OpenAlex
- W3122939459
- Cited by
- 67
- References
- 8
- Citations by year
- 2026: 4 · 2025: 12 · 2024: 21 · 2023: 13 · 2022: 13 · 2021: 4
- FWCI
- 11.53
- Type
- conference paper
- Language
- en
- Open access
- hybrid
- doi.org
- Licence
- Locations
- CHI Conference on Human Factors in Computing Systems (publishedVersion, cc-by)
- arXiv (Cornell University) (submittedVersion)
- arXiv (Cornell University) (cc-by)
- Topics
- Social Sciences › Safety Research › Ethics and Social Impacts of AI
- Social Sciences › Economics, Econometrics and Finance › Economics and Econometrics › Game Theory and Voting Systems
- Social Sciences › Education › School Choice and Performance
- Keywords
- value-sensitive design, algorithmic transparency, educational equity, community, model assumptions, stakeholder engagement, socioeconomic disparities, algorithmic fairness, San Francisco Unified School District, algorithmic governance
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