<![CDATA[The accreditation preparation process for study programs in Indonesian higher education remains largely manual, making it prone to data inconsistencies and absent audit trails. Existing information systems are generally single-tenant and do not support complex access hierarchies. In this study, we design, implement, and evaluate a multi-tenant web-based accreditation preparation simulation platform using an SDLC cycle. The platform introduces four novelty layers: (1) a multi-tenant architecture with triple-layer data isolation; (2) a four-level-scope Hierarchical Role-Based Access Control (HRBAC); (3) a centralized instrument bank for distributing accreditation instrument templates; and (4) LLM-assisted form content checking. We evaluate the platform through PHPUnit functional testing (207 test methods, 23 files) on a GitHub Actions pipeline and a System Usability Scale (SUS) study with 15 respondents from six user roles. All 207 tests passed (100%) and the mean SUS score was 83.3 (Excellent category, formative reading given n = 15). We state upfront that the LLM-assisted review is currently validated at the functional and infrastructure level only; its accuracy against accreditation rubrics has not yet been evaluated and is staged as follow-up work. Within that boundary, the combination of all four novelty layers has not been reported in any previously published accreditation system research.]]>
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