GPA Vault is written and maintained by the GPA Vault team. This page explains how we research, write, and keep our content accurate.
Every calculator and guide is built around publicly documented, verifiable formulas and figures — official grading conventions, federal loan formulas, and government or institutional data (Department of Education, College Board, ACT, IB Organization, NCES, BLS). Our full sourcing approach for each calculator category is detailed on our Methodology page.
Drafting is assisted by AI tools, with every published page reviewed against source material before and after publication for factual accuracy — formulas are checked against the underlying math, and cited figures are checked against their original source rather than copied from secondary summaries.
We publish as "GPA Vault" rather than under invented personal bylines with fabricated credentials. Any site claiming a named "certified financial planner" or "academic advisor" author should be able to show you that person actually exists — we'd rather be transparent that this is a small, focused team producing tool-driven content than manufacture a fake individual expert persona.
Pages with time-sensitive figures — federal loan interest rates, repayment plan rules, test score percentile tables — are flagged internally for annual or as-needed review, tied to when the underlying official data actually changes (for loan rates, that's every July 1; for policy changes, whenever new rules take effect). Pages show an "Updated" date reflecting the last time the content was checked or revised.
If a figure, formula, or claim on this site is wrong, we want to know. Email canghun13@naver.com with the page and the issue, and we'll verify and correct it.
GPA Vault provides general educational calculators and information, not personalized financial, legal, or academic advice. Loan repayment decisions, financial aid appeals, and academic standing questions should ultimately be confirmed with your loan servicer, financial aid office, or school registrar — our tools are a planning aid, not an authoritative record of your specific situation.
Methodology — the formulas and data sources behind each calculator.