# Judgegrid > Assign judges to science fair projects with conflict of interest checks, even loads and category matching, then print route sheets and judge lists. Free, no sign up. Judgegrid is a browser only judge assignment tool for science fair coordinators and for hackathon and student showcase organisers. The coordinator pastes the projects (project code, title, category, division, table or board number, room, school, optional student initials and special flags) and the judges (name, school or employer, categories they can judge, expertise tags, conflicts with schools, projects and students, availability windows, and a maximum number of projects), then sets the rules: judges per project, projects per judge minimum and maximum, category match required or preferred, no two judges from one school on a panel, and optional rounds and time slots. A deterministic solver in a Web Worker assigns judges and keeps the hard rules (conflicts, availability, maximums, one place at a time with no two visits at overlapping times, the category rule when required), never broken silently: a seat it cannot fill stays empty and the project is listed with the reason for every judge who could not take it. It then evens out judge loads, prefers category and expertise matches and spreads schools across panels. The review grid shows judges by slots; the coordinator drags a visit to another judge or time with live conflict flags, locks visits and rebalances the rest. It prints judge route sheets with table numbers and times, project judge lists, a master grid, a conflict audit, blank scoring packets with the organiser's own criteria (no rubric is shipped) and a check-in list, with CSV. Project and judge names stay in the browser. Fairness is the coordinator's call; the tool only applies the rules entered. ## Tool - [Home](https://judgegrid-web.pages.dev/): What the judge assignment tool does, who it is for, and why project and student details never leave your browser. - [Judge assigner](https://judgegrid-web.pages.dev/assign/): The app: paste projects and judges, set the rules, assign judges with conflict checks, adjust by drag, and print route sheets and judge lists. ## Guides - [Judge assignment guides](https://judgegrid-web.pages.dev/guide/): How the assigner reads the rules, which rules are hard, how loads and matches are balanced, and links to every guide. - [How to assign judges to science fair projects](https://judgegrid-web.pages.dev/guide/how-to-assign-judges-to-projects/): Seven steps from a registration list to route sheets, with the sample fair of 36 projects and 12 judges assigned by the tool and a dated comparison of judging tools. - [Science fair judge conflicts of interest](https://judgegrid-web.pages.dev/guide/judge-conflicts-of-interest/): The four kinds of conflict worth collecting, how each becomes a rule, and how the conflict audit shows every one was kept. - [How many judges per science fair project](https://judgegrid-web.pages.dev/guide/how-many-judges-per-project/): The usual floor and range, the capacity check, and the sample fair assigned with two, three and four judges per project. - [Science fair judge route sheets and schedules](https://judgegrid-web.pages.dev/guide/judge-route-sheets/): What a route sheet shows, walking order, time slots, and one judge's printed route from the sample fair with ten minute slots. - [Category and expertise matching for judges](https://judgegrid-web.pages.dev/guide/category-and-expertise-matching/): Required, preferred or off: what each category setting costs in panels, with the sample fair assigned both ways, and how expertise tags break ties. - [Hackathon judging rotations and schedules](https://judgegrid-web.pages.dev/guide/hackathon-judging-rotations/): Expo style judging in rotations: visits per team, four minute slots, the slot arithmetic and a worked rotation for 18 teams and 6 judges. ## Reference - [FAQ](https://judgegrid-web.pages.dev/faq/): Where project details are kept, which rules are hard, what is free, and what the assigner does not decide. ## Policies - [Privacy](https://judgegrid-web.pages.dev/privacy/): Projects, judges and student initials are assigned, saved and printed in the browser and never uploaded. - [Terms of use](https://judgegrid-web.pages.dev/terms/): What a judge assignment aid can be relied on for, and what stays free. ## Pricing Free today. Any number of projects and judges, rounds and time slots, saved drafts and comparison, every printout and CSV are free with no sign up. Nothing is for sale. ## What it is not - Not affiliated: Judgegrid is not affiliated with any science fair, science fair organisation, competition, hackathon, school, school district or judging software company. - Not the decision maker: fairness is the coordinator's call; the tool only applies the rules entered and explains what it could not fill. - Not a scoring or tabulation system: it ships no rubric, scores nothing and ranks nothing. Scoring packets carry only the criteria the organiser types. - Not a registration system: no accounts, entry forms, payments or parent contact. - Not an uploader: project, student and judge details are never sent anywhere; names stay in the browser and there is no server. ## Optional - [Full text of every page](https://judgegrid-web.pages.dev/llms-full.txt): the guides, FAQ and policies as Markdown, in one file. - Support: socialreminderinfo@gmail.com