From data cleaning and defensible scoring to reports and software tools, we solve the hardest data problems in exams, assessments, and surveys — for universities, testing agencies, government programs, and companies.
You bring the question; we deliver results that are trustworthy, reproducible, and audit-ready.
New to IRT, equating, or weighting? That's fine — in every project, we explain each step until it makes sense to you. To read ahead, Methods explains every method in language you can understand, and the Learning Hub offers a systematic beginner's path.
A reviewer questioning your measurement model? Unsure about weighting, missing data, or reliability? We work to academic standards and hand over every method, parameter, and step — ready for peer review and defense.
Need scores that are truly comparable across sessions and test forms? Ready to move beyond raw totals to modern, defensible scoring? Million-record response data too heavy to process? This is our core business.
A large survey or monitoring program that needs a reliable third party for data processing and quality control? We deliver fully reproducible pipelines — every number traceable, audit-ready, and your data never leaves your intranet.
Want talent assessments with defensible scores and norms rather than simple totals? Employee and customer surveys that yield decisions rather than piles of charts? We turn data into results your leadership can act on.
Sensitive data that cannot be handed to an outside team is where many projects stall. Our tool–data isolation model was designed for exactly this: WEIAN never touches your real data — we build the tools on de-identified samples, and all real-data computation happens inside your intranet. You get verifiable results; your data never takes a single step outside.
Three in-house software tools covering the full cleaning → scoring → weighting workflow for survey and assessment data, with complete IP ownership — what you receive is not a one-off script, but an engineered product built to last.
View full case studies →Automated checking, correcting, and merging — every change logged and traceable, so silent data errors never reach your results.
Full case study →A high-performance scoring engine for millions of responses, keeping scores comparable across test forms and years.
Full case study →Makes sample surveys truly represent the population: pre-checks, calibration, and diagnostics in one workflow.
Full case study →An exam, an assessment, or a large-scale survey — email us the background and goals. We'll first tell you honestly whether it's feasible and worth doing, then send a technical plan and quote. The initial consultation is free, and if we're not the right fit, we'll say so.