Changelog

Product updates

New examination data, calculator improvements, and changes to IB Predict.

Latest: November bulletins · August 14, 2026

21 updates
Data

May 2026 grade boundaries

The newest examination boundaries became available in subject calculators.

  • Added May 2026 boundaries across supported subjects and timezones.
  • Added M26 as an official boundary option in the main calculator and on individual subject pages.
  • Extended historical boundary charts and tables through May 2026.
  • Updated forecast grade probabilities to include May 2026 outcomes.
Data Latest

November 2024 and 2025 bulletin data

Two November sessions of worldwide results are now available throughout IB Predict.

  • Kept all six diploma groups visible in the sidebar summary, using a dash for subjects that have not been selected yet.
  • Weighted grade probability toward recent post-COVID November boundaries, followed by recent May boundaries, while reducing the influence of transitional and older sessions.
  • Changed grade probabilities to reflect actual outcomes across comparable published session and timezone boundaries, eliminating misleading 50/50 results at forecast cutoffs.
  • Treated TOK and Extended Essay boundaries as stable cutoffs, removing artificial 50/50 probabilities when a score lands exactly on a threshold.
  • Shortened the forecast table heading in the predicted-grade card to “November 2026 forecast.”
  • Reworked the individual subject result card to show the forecasted grade probability alongside one grade below and above, plus a shorter N25 percentile comparison.
  • Made the November 2026 forecast the default boundary choice on individual subject pages, with official M25 and N25 boundaries available as clear alternatives and no competing result card.
  • Focused each main-calculator subject card on one best next move, moving percentile standing, grade outlook, assessment calculations, and session history into optional context.
  • Replaced decimal average grades in chart summaries with a plain typical whole-grade result, keeping the exact published average inside the optional chart explanation and data table.
  • Clarified forecast percentages by stating the fixed weighted score first, separating the most likely grade from its likelihood, and keeping model details optional.
  • Kept unpersonalized diploma benchmarks out of the incomplete sidebar, placing session averages, pass rates, and sample sizes inside optional comparison details.
  • Reduced the Next grade panel to one actionable recommendation, moving boundary risk, assessment calculations, and past-session comparisons into optional details.
  • Clarified historical boundary charts with one plain-language caption, optional timezone guidance, and a complete All grades view.
  • Removed competing average and student marker lines from grade distributions, using one outlined result bar and a written session average instead.
  • Added focused historical trend graphs to the dedicated TOK and Extended Essay boundary pages without adding prediction content.
  • Synchronized grade-distribution tables with the chart’s May or November selection, while retaining All Sessions for broader comparisons.
  • Fixed missing-boundary selections so the next-grade field says unavailable instead of incorrectly implying the top grade.
  • Replaced “markband” and “candidate” jargon in result tables with clearer grade-boundary and student labels.
  • Relabeled predicted-mark results as weighted score and marks to the named next grade, removing ambiguous “Grade” and “Points Away” labels.
  • Added a plain-language FAQ for experimental forecasts, separating boundary uncertainty from exam-performance predictions.
  • Moved the full TOK and Extended Essay core-points matrix behind an optional explanation and kept dedicated boundary pages focused on boundaries.
  • Condensed the diploma sidebar to total points and diploma status, with subject and core grades available in an optional breakdown.
  • Removed the duplicate forecast card from subject pages and placed the chart and model checks behind the forecast summary’s optional details.
  • Removed false decimal precision from student comparisons and labeled every ranking as approximate.
  • Aligned the calculator, FAQ, assistant, and results guide around plain-language grade outlooks while keeping technical statistics optional.
  • Prevented saved assessment marks from exceeding a newly selected component’s maximum and producing impossible scores.
  • Focused historical charts on the student’s current predicted-grade boundary by default, with all-grade comparison optional and simpler minimum-score wording.
  • Reduced grade strategy to one recommended action and one plain-language outlook, with assessment calculations and historical comparisons in a single optional section.
  • Removed the inferred bell curve from grade distributions, surfaced the student result and session average, and placed chart guidance behind one optional explanation.
  • Made collapsed subject cards keep only the weighted score and predicted grade while hiding boundaries, insights, assessment controls, and analysis links.
  • Reframed forecast likelihoods around a fixed student score, hid model diagnostics behind an optional section, and made assistant trend answers less speculative.
  • Moved session, timezone, syllabus, and pandemic-era reference notes behind one optional disclosure and added a dedicated selection guide.
  • Simplified forecast and distribution language, removed repeated chart descriptions, and moved student-count caveats behind an optional explanation.
  • Simplified statistical summaries, hid advanced boundary statistics by default, and added a plain-language results guide.
  • Condensed collapsed subject cards to the subject name, weighted score, and awarded grade.
  • Eliminated the Extended Essay refresh flash by aligning server-rendered and hydrated calculator state.
  • Added hover and keyboard tooltips for truncated assessment names in the main calculator.
  • Aligned EE and TOK grade distributions with the graph and always-visible table used by standard subject pages.
  • Added official Extended Essay subject-group and TOK grade comparisons for six examination sessions.
  • Refined the Extended Essay calculator and rebuilt its boundary history and core-points matrix for desktop and mobile.
  • Added session-level diploma benchmarks and an estimated overall-score percentile to the main calculator.
  • Added grade strategy tools with next-grade recommendations, assessment impact, historical confidence, and session-by-session what-if results.
  • Brought compact next-grade strategy, confidence, percentile, assessment impact, and historical what-if insights into the main calculator.
  • Added final May 2023 results for 164 subject and level combinations and November 2023 results for 100.
  • Added final November 2024 and November 2025 results for 102 subject and level combinations each.
  • Added May 2025 candidate totals, mean grades, and grade distributions for 160 subjects.
  • Expanded the exam-session switcher so students can compare November and May sessions.
  • Marked the May 2025 figures as provisional to match the source bulletin.
  • Redesigned the assistant as a modern AI workspace with image uploads, tool activity, and automatic subject-mark entry.
  • Added inline subject boundaries, grade margins, and a compact diploma summary to the main calculator.
  • Introduced experimental November 2026 boundary forecasts with prediction intervals, rolling backtests, and personalized grade probabilities.
Product

Dedicated grade-boundary pages

Historical boundaries became easier to browse outside the calculator.

  • Launched dedicated grade-boundary index and subject pages.
  • Updated the sitemap, team roles, and About page content.
  • Improved deployment stability for Cloudflare.
Product

Science calculator corrections

Assessment structures were aligned with the latest science specifications.

  • Corrected Biology, Chemistry, and Physics assessment weights.
  • Fixed Physics Paper 1b maximum marks and SL Paper 1a data.
  • Reviewed Biology assessment data for the current syllabus.
Design

Major interface refresh

The calculator and data visualizations received a full visual overhaul.

  • Introduced a cleaner, responsive interface across desktop and mobile.
  • Added November 2025 grade boundaries.
  • Improved grade graphs with averages, standard deviations, and clearer labeling.
  • Corrected timezone selection and core-subject percentages.
Data

May 2025 grade boundaries

The newest examination boundaries became available in subject calculators.

  • Added May 2025 boundaries across supported subjects and timezones.
  • Fixed timezone mapping for the new examination session.
Design

Consistent subject browsing

Subject discovery and calculator controls were standardized.

  • Made buttons and interactive states consistent across the subject directory.
  • Polished the home-page calculator and segmented grade indicator.
Product

Richer subject insights

Subject pages gained more context, visual data, and mobile support.

  • Added the global grade-distribution graph and bulletin table.
  • Redesigned subject pages and improved mobile layouts.
  • Added the segmented grade display, colored core matrix, and About page.
  • Improved historical tables and filled missing grade boundaries.
Design

Visual system and bulletin beta

IB Predict adopted a more cohesive visual language.

  • Introduced the statistical bulletin beta and descriptive page headers.
  • Refreshed colors, fonts, banners, and typography rendering.
  • Fixed the core matrix calculation.
Community

Community access improvements

Support and guidance became easier to find around the site.

  • Added the Discord community widget and refreshed social icons.
  • Expanded FAQs, footnotes, and calculator guidance.
Data

Philosophy 2025 syllabus

Philosophy was updated for the new assessment cycle.

  • Added the 2025 Philosophy course structure.
  • Clarified calculator footnotes and mark requirements.
Data

November 2024 boundaries

Another examination session was added to historical comparisons.

  • Added November 2024 grade boundaries.
  • Fixed SL-only handling and floating-point grade calculations.
Product

2025 course updates

Calculators were prepared for the incoming examination specifications.

  • Updated course structures for the May 2025 session.
  • Improved saved calculator-state behavior and corrected Psychology data.
Data

May 2024 data and 2025 sciences

Historical coverage grew while the next science cycle was prepared.

  • Added May 2024 grade boundaries.
  • Added the 2025 Biology, Chemistry, and Physics syllabuses.
  • Introduced the educator Excel tool.
Biology (2025)Chemistry (2025)Physics (2025)
Product

Flexible boundary selection

Students gained more control over the session used by each calculator.

  • Added individual grade-boundary selection.
  • Added November 2023 boundaries and historical subject graphs.
  • Archived superseded 2024 course specifications.
Community

IB Predict community

A dedicated space opened for support and post-exam discussion.

  • Launched the IB Predict Discord community.
  • Expanded support options beyond email.
Join Discord
Design

Home-page navigation refresh

The landing page became faster to scan and easier to navigate.

  • Added prominent navigation cards and buttons.
  • Improved domain and deployment reliability.
Data

May 2024 syllabus preparation

Five subjects were readied for their upcoming specification changes.

  • Updated Business Management, Classical Language, Digital Society, Literature and Performance, and Theatre.
Data

May 2023 boundaries

Historical comparison and subject coverage expanded.

  • Added May 2023 boundaries.
  • Added Marine Science and probability-distribution graphs.
Design

The first full interface

The foundational IB Predict experience came together.

  • Added dark mode, subject browsing, and individual subject pages.
  • Added timezone selection, historical tables, and the changelog.
  • Expanded coverage with May 2021, November 2019, and November 2020 boundaries.
Product

Initial release

IB Predict launched with its first calculators and datasets.

  • Released the first version of IB Predict.
  • Added May 2019 boundaries and bilingual diploma support.