Linking, Routing and Fairness for Through-Year Assessment R package throughyear version 0.1.0 Treats a through-year assessment system (interims during the year feeding a multistage summative) as the unit of analysis. Links interims to the summative scale with a latent multivariate normal model that carries each score's measurement error forward and handles missing interims, estimated by the EM algorithm (Dempster, Laird and Rubin, 1977, <doi:10.1111/j.2517-6161.1977.tb01600.x>) with SQUAREM acceleration (Varadhan and Roland, 2008, <doi:10.1111/j.1467-9469.2007.00585.x>); simulates cold-start versus prior-informed routing in a two-stage multistage test; checks whether priors disadvantage late enrollers, low scorers or fast growers; and evaluates decision accuracy and consistency of through-year scores against a single summative. Software Depends: R (>= 4.1) Imports: stats Suggests: knitr, markdown Daniel Edi <danieledi2026@gmail.com> Comprehensive R Archive Network (CRAN) Daniel Edi [aut, cre, cph] (ORCID: <https://orcid.org/0000-0001-5475-819X>) MIT + file LICENSE (https://CRAN.R-project.org/package=throughyear/LICENSE) 2026-10-08 application/tgz https://CRAN.R-project.org/package=throughyear doi:10.32614/CRAN.package.throughyear