Scoring Services
Industry-leading hand, automated, and hybrid scoring鈥攃ombining rigorously trained raters with the PEG® automated-scoring engine for unmatched accuracy and turnaround.
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Human Expertise, Intelligent Technology
Excellence in assessment, for over 40 years.
91猫先生 is an employee-owned leader in scoring, psychometrics, and test development鈥攑airing deep human expertise with advanced automated technology to deliver accurate, fair, and timely results.
40+
Years of assessment expertise
30+
State departments of education served
50M+
Student responses scored each year
What We Do
A full spectrum of assessment services
From scoring and psychometrics to evaluation, training, and implementation, we deliver customized solutions to state departments, testing companies, and organizations nationwide.
Psychometric & Assessment Services
A complete range of psychometric services alongside comprehensive item and test development鈥攇rounded in best practice and federal peer-review requirements.
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Program evaluation, professional development and training, and implementation support that build schools' capacity to improve student outcomes.
Why 91猫先生
Why leading assessment programs choose us
Proven, award-winning accuracy
A grand-prize winner of the NAEP Automated Scoring Challenge and both phases of the Hewlett ASAP competition鈥攔esults you can trust.
Human expertise + AI
91猫先生 hybrid model routes complex responses to expert raters while automation delivers speed, consistency, and scale.
Research-driven
91猫先生 psychometricians and scientists publish in leading peer-reviewed journals and advance the science of measurement.
Employee-owned partnership
As owners, our people bring uncommon commitment, integrity, and accountability to every client relationship.
91猫先生 mission
"To benefit our clients, employees, community, and profession by providing excellence in assessment."
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Recent Highlight
91猫先生 provides customized professional learning to 1200+ educators in Pueblo, Colorado
On November 10, 91猫先生 staff and consultants delivered professional learning to over 1200 educators in Pueblo, Colorado. This event is part of 91猫先生鈥檚 two-year contract with Pueblo School District 60 to support district leadership with their school improvements 鈥�
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Explore research milestones, industry recognition, and news from across 91猫先生.
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Ready to achieve excellence in assessment?
Whether you need scoring at scale, psychometric expertise, or a partner for your next assessment program, our team is ready to help.