An evaluation from WestEd, released August 4, 2025, finds that outcomes-based contracting for education technology and tutoring services produced positive academic effects in three of eight early-adopter school districts where rigorous causal analysis was possible. The study, conducted on behalf of the Center for Outcomes Based Contracting, examined interventions from the 2022-23 through 2024-25 school years across districts in California, Florida, Mississippi, and Texas.
In one district, an AI-based English language arts tutoring platform generated large proficiency gains for eligible 2nd grade students. In a second, literacy tutoring substantially increased the likelihood that students met typical reading growth targets. In a third, math tutoring produced strong gains at least partially attributable to the service. The report noted that districts spent similar amounts on OBC contracts as they did on traditional contracts, suggesting what the authors described as the possibility of receiving greater intensity of services for comparable cost.
OBC contracts typically make about 40 percent of the total value contingent on measurable student outcomes. A base fee is paid up front, with additional payments tied to specific academic benchmarks through a prenegotiated rate card, according to Education Week. The contingent portion can range from 20 to 60 percent of total cost, and mutual accountability mechanisms mean that if a district fails to meet its obligations, it must pay the full contract value regardless of outcomes.
Key limitations and mixed evidence
The WestEd evaluation is described as the most rigorous third-party examination of OBC in practice to date, but its own limitations are substantial. Researchers combined interviews, site visits, document review, student achievement analyses, and fiscal reviews, but rigorous causal analysis was possible for only a subset of partnerships. Districts and schools had discretion in assigning students to interventions, which limited the ability to draw clear causal conclusions. The report explicitly states that the effect of OBC cannot be disentangled from the effect of the intervention itself; all findings point to the effect of an intervention delivered under an OBC arrangement, not OBC as an independent mechanism.
An EdWorkingPaper from Brown University's Annenberg Institute, examining OBC implementation in tutoring through the Southern Education Foundation pilot program, found that OBC fosters collaboration, improves service alignment with student needs, and enhances data tracking. However, it identified financial risks for vendors and the complexity of implementation as challenges, concluding that OBC shows promise but broader adoption requires capacity building, equitable risk-sharing, and further research on long-term student outcomes.
What previous research found
Earlier studies have documented the shortcomings of traditional district procurement. A Stanford SCALE Initiative analysis of more than 120 contracts for tutoring, curriculum, and edtech found that the vast majority of traditional contracts do not define student success, track outcomes, or prioritize the students most in need. Nearly two-thirds of traditional contracts lacked a basic rationale for vendor selection, and fewer than one in five tied payment to results. By contrast, 100 percent of OBC contracts analyzed included clear goals and metrics and tied payments to results.
A Digital Promise implementation study of the first OBC ed-tech cohort found that under traditional contracts, only about 5 percent of licenses are used as recommended for maximum impact, with 65 percent of edtech licenses going unused. Under OBCs, the study reported usage rates 10 times or more greater than expected under traditional contracts; in one district, nearly every learner used the tool as recommended.
Parallels in other sectors
The Stanford SCALE analysis notes that OBC has parallels in performance-based contracting approaches used in workforce development and social services. A review cited by Stanford researchers (Koning and Heinrich, 2013) found mixed but often positive effects on provider performance and accountability. However, the Stanford analysis warns that poorly structured incentives in such contracts might encourage providers to serve only the easiest-to-help populations or to game metrics.
Growing adoption and remaining questions
Participation in OBC has grown from five completed contracts in 2022 to 46 by 2025, with 87 school systems now involved. The study was conducted in partnership with the Center for Outcomes Based Contracting, a nonprofit that assists districts and providers in implementing the procurement model. In a concrete example, Fresno Unified School District in California entered an outcomes-based agreement with Curriculum Associates for i-Ready during 2024-25; because some expected student outcomes were not entirely met, the district did not pay 100 percent of the negotiated services, reflecting the financial consequence of the performance-contingent structure.
The WestEd evaluation found that when interventions were implemented with clear target populations and for the intended duration, OBC generated positive causal effects on student outcomes in reading and math in three of eight districts. It also strengthened district-provider partnerships through clearer contracts, more frequent communication, and shared data use, and built district capacity in continuous improvement practices. But implementation barriers frequently impeded success, and outcomes depended heavily on district capacity and school buy-in.
The report's own framing leaves the model's independent value proposition as an open question: the positive results could stem from better interventions chosen through the OBC process, from the performance incentives embedded in the contracts, or from a combination of both. As the number of participating districts continues to climb, the question of whether OBC itself drives improvement, or simply attracts districts that already select effective providers, remains unresolved.