nexxus is your partner
Psychometric & Technical services
At the foundation of every effective assessment is psychometric quality. Nexxus offers measurement services that ensure reliability, validity, fairness, and defensibility. We provide the technical expertise leaders need to make sound, evidence-based decisions.
What partnering with Nexxus could look like
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Designing, overseeing, and conducting equating and scaling studies
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Leading standard setting and validation meetings to establish cut scores
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Running fairness and DIF analyses to ensure equitable score interpretation
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Conducting norm- and criterion-referenced studies to evaluate performance
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Validating AI scoring engines against human scoring for accuracy and reliability
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Building and maintaining item banks and calibration models to support adaptive testing, ensuring precision and efficiency in large-scale programs
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Designing validity and reliability frameworks that withstand peer review, accreditation, and legal scrutiny while strengthening stakeholder confidence
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From IRT modeling and equating to standard setting and AI scoring validation, we provide the technical expertise leaders need to make sound, evidence-based decisions.
Be Precise
Behind every score is a science of measurement that must be valid, reliable, and fair. Nexxus applies deep psychometric expertise—equating, scaling, linking, and fairness analyses—to ensure every assessment produces results that can be trusted. Our work safeguards both students and systems by upholding the highest technical standards.
Be Defensible
When results drive funding, accountability, and opportunity, technical quality is non-negotiable. Nexxus provides the evidence leaders need to meet federal peer review, validate new innovations like AI scoring, and strengthen technical documentation. With decades of experience, we help organizations stand confidently behind their data and decisions.