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CIE 0653 Combined Science grade boundaries

Every grade threshold Cambridge published for 0653 Combined Science, covering March 2022 to June 2026: 14 sittings and 189 component thresholds, as the raw marks Cambridge prints and as percentages.

Go to the tables →

Read this before you read the numbers

These are past thresholds. They are not predictions.

Cambridge sets the threshold for a paper after that paper has been sat and marked, so the number moves every session with the difficulty of the paper and the performance of the whole cohort. Nothing on this page forecasts a future boundary, and no page on this site does. Use these to see the range a paper has sat in, not to decide what you will need next session.

Every number is copied from a named Cambridge document.

Nothing here is averaged, interpolated or estimated. The one figure calculated on this page is the percentage, which is the published mark divided by the maximum raw mark printed on the same row, rounded to the nearest whole number. The 14 source documents are listed at the foot of the page.

These are component thresholds, not overall grades.

Each row is one paper. Cambridge awards the overall grade from your total across the papers you sat, so clearing the A threshold on one component is not the same as an A for the syllabus.

Some papers cannot reach the top grades.

On a tiered syllabus a paper is set for one tier, and the tier limits the highest grade it can award. Cambridge publishes no threshold at all for those grades, so this table says "Not available on this tier" in that cell. It is not a blank we failed to fill and it is not a zero: the grade is not on offer for that paper.

Thresholds by component

Newest sitting first. 19 components, 14 sittings, grades A to G.

Component 11

SittingMax markABCDEFG
June 202640rawNot availableon this tierNot availableon this tier2050%1845%1640%1435%1230%
November 202540rawNot availableon this tierNot availableon this tier2153%1845%1640%1333%1128%
June 202540rawNot availableon this tierNot availableon this tier1948%1743%1538%1333%1128%
November 202440rawNot availableon this tierNot availableon this tier2255%2050%1743%1435%1128%
June 202440rawNot availableon this tierNot availableon this tier2153%1948%1640%1333%1128%
November 202340rawNot availableon this tierNot availableon this tier2050%1845%1640%1435%1230%
June 202340rawNot availableon this tierNot availableon this tier1948%1743%1538%1333%1128%
November 202240rawNot availableon this tierNot availableon this tier2050%1845%1640%1435%1230%
June 202240rawNot availableon this tierNot availableon this tier1948%1743%1538%1333%1128%

Component 11, 9 sittings. The large figure is the raw mark Cambridge published; the small figure is that mark as a percentage of the paper total on its own row, rounded to the nearest whole number.

Component 12

SittingMax markABCDEFG
June 202640rawNot availableon this tierNot availableon this tier1948%1743%1538%1333%1128%
March 202640rawNot availableon this tierNot availableon this tier1948%1743%1640%1435%1230%
November 202540rawNot availableon this tierNot availableon this tier2050%1845%1743%1538%1333%
June 202540rawNot availableon this tierNot availableon this tier1948%1743%1538%1333%1128%
March 202540rawNot availableon this tierNot availableon this tier1948%1743%1640%1435%1230%
November 202440rawNot availableon this tierNot availableon this tier2050%1845%1640%1435%1230%
June 202440rawNot availableon this tierNot availableon this tier2153%1845%1640%1435%1230%
March 202440rawNot availableon this tierNot availableon this tier2255%2050%1845%1640%1435%
November 202340rawNot availableon this tierNot availableon this tier2050%1845%1640%1435%1230%
June 202340rawNot availableon this tierNot availableon this tier2050%1845%1640%1435%1230%
March 202340rawNot availableon this tierNot availableon this tier2153%1845%1640%1435%1230%
November 202240rawNot availableon this tierNot availableon this tier2050%1845%1640%1435%1230%
June 202240rawNot availableon this tierNot availableon this tier2050%1948%1743%1538%1333%
March 202240rawNot availableon this tierNot availableon this tier2255%2050%1845%1640%1435%

Component 12, 14 sittings. The large figure is the raw mark Cambridge published; the small figure is that mark as a percentage of the paper total on its own row, rounded to the nearest whole number.

Component 13

SittingMax markABCDEFG
June 202640rawNot availableon this tierNot availableon this tier1948%1743%1538%1333%1128%
November 202540rawNot availableon this tierNot availableon this tier2050%1845%1743%1538%1333%
June 202540rawNot availableon this tierNot availableon this tier1948%1743%1538%1333%1128%
November 202440rawNot availableon this tierNot availableon this tier2050%1845%1640%1435%1230%
June 202440rawNot availableon this tierNot availableon this tier2153%1845%1640%1435%1230%
November 202340rawNot availableon this tierNot availableon this tier2050%1845%1640%1435%1230%
June 202340rawNot availableon this tierNot availableon this tier1948%1743%1538%1333%1128%
November 202240rawNot availableon this tierNot availableon this tier2050%1845%1640%1435%1230%
June 202240rawNot availableon this tierNot availableon this tier1948%1743%1538%1333%1128%

Component 13, 9 sittings. The large figure is the raw mark Cambridge published; the small figure is that mark as a percentage of the paper total on its own row, rounded to the nearest whole number.

Component 21

SittingMax markABCDEFG
June 202640raw2665%2358%2050%1845%1640%1435%1230%
November 202540raw3075%2665%2153%1948%1743%1538%1333%
June 202540raw2665%2255%1948%1743%1538%1333%1128%
November 202440raw2870%2358%1948%1743%1538%1333%1128%
June 202440raw2665%2255%1845%1743%1538%1333%1128%
November 202340raw2768%2358%1948%1743%1538%1333%1128%
June 202340raw2665%2255%1845%1640%1538%1333%1128%
November 202240raw2665%2255%1948%1743%1538%1333%1128%
June 202240raw2563%2153%1845%1640%1538%1333%1128%

Component 21, 9 sittings. The large figure is the raw mark Cambridge published; the small figure is that mark as a percentage of the paper total on its own row, rounded to the nearest whole number.

Component 22

SittingMax markABCDEFG
June 202640raw2665%2358%1948%1743%1538%1333%1128%
March 202640raw2768%2255%1845%1640%1435%1333%1230%
November 202540raw3075%2563%1948%1743%1538%1333%1128%
June 202540raw2768%2358%1948%1743%1538%1333%1128%
March 202540raw2973%2460%2050%1845%1538%1333%1128%
November 202440raw3075%2665%2153%1948%1743%1538%1333%
June 202440raw2768%2358%2050%1845%1640%1435%1230%
March 202440raw2973%2460%2050%1743%1538%1333%1128%
November 202340raw2973%2460%2050%1845%1640%1435%1230%
June 202340raw2768%2358%1948%1743%1538%1333%1128%
March 202340raw2768%2358%2050%1743%1538%1333%1128%
November 202240raw2665%2358%2050%1845%1640%1435%1333%
June 202240raw2460%2153%1948%1743%1538%1333%1128%
March 202240raw2460%2153%1948%1743%1538%1333%1128%

Component 22, 14 sittings. The large figure is the raw mark Cambridge published; the small figure is that mark as a percentage of the paper total on its own row, rounded to the nearest whole number.

Component 23

SittingMax markABCDEFG
June 202640raw2665%2255%1948%1743%1538%1333%1128%
November 202540raw2768%2358%1948%1743%1538%1333%1128%
June 202540raw2768%2358%1948%1743%1538%1333%1128%
November 202440raw2768%2358%1948%1743%1538%1333%1128%
June 202440raw2768%2358%2050%1845%1640%1435%1230%
November 202340raw2870%2460%2050%1845%1640%1435%1230%
June 202340raw2665%2255%1845%1640%1538%1333%1128%
November 202240raw2665%2255%1948%1743%1538%1333%1128%
June 202240raw2768%2460%2153%1845%1640%1538%1435%

Component 23, 9 sittings. The large figure is the raw mark Cambridge published; the small figure is that mark as a percentage of the paper total on its own row, rounded to the nearest whole number.

Component 31

SittingMax markABCDEFG
June 202680rawNot availableon this tierNot availableon this tier3341%2734%2228%1620%1013%
November 202580rawNot availableon this tierNot availableon this tier3544%3139%2633%2228%1823%
June 202580rawNot availableon this tierNot availableon this tier3139%2531%1924%1316%810%
November 202480rawNot availableon this tierNot availableon this tier3645%3038%2531%1924%1316%
June 202480rawNot availableon this tierNot availableon this tier3341%2734%2126%1519%911%
November 202380rawNot availableon this tierNot availableon this tier3443%2936%2329%1721%1114%
June 202380rawNot availableon this tierNot availableon this tier3139%2633%2025%1519%1013%
November 202280rawNot availableon this tierNot availableon this tier3341%2734%2126%1519%1013%
June 202280rawNot availableon this tierNot availableon this tier3139%2531%2025%1519%1013%

Component 31, 9 sittings. The large figure is the raw mark Cambridge published; the small figure is that mark as a percentage of the paper total on its own row, rounded to the nearest whole number.

Component 32

SittingMax markABCDEFG
June 202680rawNot availableon this tierNot availableon this tier3544%2936%2430%1823%1215%
March 202680rawNot availableon this tierNot availableon this tier3645%3038%2329%1721%1114%
November 202580rawNot availableon this tierNot availableon this tier4050%3544%2936%2430%2025%
June 202580rawNot availableon this tierNot availableon this tier3139%2531%1924%1316%810%
March 202580rawNot availableon this tierNot availableon this tier3848%3240%2430%1721%1013%
November 202480rawNot availableon this tierNot availableon this tier3544%3038%2430%1823%1316%
June 202480rawNot availableon this tierNot availableon this tier3240%2734%2126%1519%1013%
March 202480rawNot availableon this tierNot availableon this tier3848%3139%2430%1620%810%
November 202380rawNot availableon this tierNot availableon this tier3544%2936%2228%1620%1013%
June 202380rawNot availableon this tierNot availableon this tier3139%2633%2025%1519%1013%
March 202380rawNot availableon this tierNot availableon this tier3645%3038%2329%1721%1114%
November 202280rawNot availableon this tierNot availableon this tier3341%2734%2126%1519%1013%
June 202280rawNot availableon this tierNot availableon this tier3038%2430%1924%1418%911%
March 202280rawNot availableon this tierNot availableon this tier3544%2835%2126%1418%810%

Component 32, 14 sittings. The large figure is the raw mark Cambridge published; the small figure is that mark as a percentage of the paper total on its own row, rounded to the nearest whole number.

Component 33

SittingMax markABCDEFG
June 202680rawNot availableon this tierNot availableon this tier3544%2936%2430%1823%1215%
November 202580rawNot availableon this tierNot availableon this tier4050%3544%2936%2430%2025%
June 202580rawNot availableon this tierNot availableon this tier3139%2531%1924%1316%810%
November 202480rawNot availableon this tierNot availableon this tier3544%3038%2430%1823%1316%
June 202480rawNot availableon this tierNot availableon this tier3240%2734%2126%1519%1013%
November 202380rawNot availableon this tierNot availableon this tier3544%2936%2228%1620%1013%
June 202380rawNot availableon this tierNot availableon this tier3139%2531%2025%1519%1013%
November 202280rawNot availableon this tierNot availableon this tier3341%2734%2126%1519%1013%
June 202280rawNot availableon this tierNot availableon this tier3139%2531%2025%1519%1013%

Component 33, 9 sittings. The large figure is the raw mark Cambridge published; the small figure is that mark as a percentage of the paper total on its own row, rounded to the nearest whole number.

Component 41

SittingMax markABCDEFG
June 202680raw4658%3645%2430%2025%1721%1316%911%
November 202580raw4556%3544%2430%2025%1721%1418%1114%
June 202580raw4354%3341%2228%1823%1519%1114%79%
November 202480raw4759%3746%2531%2126%1721%1418%1114%
June 202480raw4759%3645%2430%2025%1620%1215%810%
November 202380raw4658%3544%2430%2025%1721%1418%1114%
June 202380raw4354%3240%2126%1823%1418%1114%810%
November 202280raw4151%3240%2228%1924%1620%1418%1215%
June 202280raw4151%3038%2025%1620%1215%911%68%

Component 41, 9 sittings. The large figure is the raw mark Cambridge published; the small figure is that mark as a percentage of the paper total on its own row, rounded to the nearest whole number.

Component 42

SittingMax markABCDEFG
June 202680raw4455%3240%2126%1721%1418%1114%810%
March 202680raw4556%3443%2126%1823%1418%1114%810%
November 202580raw4354%3341%2228%1823%1519%1215%1013%
June 202580raw4354%3240%2126%1721%1418%1114%810%
March 202580raw4556%3443%2228%1924%1519%1114%79%
November 202480raw4759%3645%2531%2126%1721%1418%1114%
June 202480raw4658%3544%2329%1924%1519%1215%911%
March 202480raw4860%3746%2531%2126%1620%1215%810%
November 202380raw4556%3443%2329%2025%1721%1418%1215%
June 202380raw4455%3240%2126%1721%1418%1114%810%
March 202380raw4556%3544%2329%2025%1519%1114%79%
November 202280raw4151%3139%2126%1823%1620%1418%1215%
June 202280raw4050%3038%2025%1620%1215%911%68%
March 202280raw4455%3341%2228%1721%1316%911%56%

Component 42, 14 sittings. The large figure is the raw mark Cambridge published; the small figure is that mark as a percentage of the paper total on its own row, rounded to the nearest whole number.

Component 43

SittingMax markABCDEFG
June 202680raw4556%3443%2329%2025%1620%1215%810%
November 202580raw4658%3544%2329%2025%1620%1316%1013%
June 202580raw4354%3240%2126%1721%1418%1114%810%
November 202480raw4860%3746%2531%2126%1721%1418%1114%
June 202480raw4759%3645%2430%2025%1620%1215%810%
November 202380raw4860%3645%2430%2126%1823%1620%1418%
June 202380raw4354%3240%2126%1823%1418%1114%810%
November 202280raw4151%3240%2228%1924%1620%1418%1215%
June 202280raw4151%3038%1924%1721%1418%1013%68%

Component 43, 9 sittings. The large figure is the raw mark Cambridge published; the small figure is that mark as a percentage of the paper total on its own row, rounded to the nearest whole number.

Component 50

SittingMax markABCDEFG
June 202690raw7179%6269%5359%4550%3842%3134%2427%
November 202490raw6876%5864%4853%3943%3134%2224%1314%
June 202490raw6876%5864%4853%3943%3134%2224%1314%
November 202390raw6876%5864%4853%3943%3134%2224%1314%
June 202390raw6876%5864%4853%3943%3134%2224%1314%
June 202290raw6774%5864%4954%4044%3134%2224%1314%

Component 50, 6 sittings. The large figure is the raw mark Cambridge published; the small figure is that mark as a percentage of the paper total on its own row, rounded to the nearest whole number.

Component 51

SittingMax markABCDEFG
June 202640raw2768%2358%2050%1743%1435%1230%1025%
November 202540raw2665%2255%1845%1640%1333%1025%718%
June 202540raw2870%2460%2050%1743%1435%1230%1025%
November 202440raw2768%2358%2050%1640%1333%1025%718%
June 202440raw2768%2358%2050%1743%1538%1333%1128%
November 202340raw2665%2255%1845%1538%1230%923%615%
June 202340raw2768%2358%2050%1845%1640%1333%1025%
November 202240raw2665%2153%1743%1435%1128%820%513%
June 202240raw2768%2563%2153%1948%1538%1333%1128%

Component 51, 9 sittings. The large figure is the raw mark Cambridge published; the small figure is that mark as a percentage of the paper total on its own row, rounded to the nearest whole number.

Component 52

SittingMax markABCDEFG
June 202640raw2870%2460%2153%1845%1538%1230%923%
March 202640raw2563%2255%1948%1640%1333%1025%718%
November 202540raw2665%2255%1845%1640%1333%1025%718%
June 202540raw2870%2460%2050%1743%1435%1128%820%
March 202540raw2973%2563%2255%1845%1538%1128%718%
November 202440raw2768%2358%2050%1640%1333%1025%718%
June 202440raw2665%2255%1845%1538%1333%1128%923%
March 202440raw2768%2460%2153%1845%1538%1128%718%
November 202340raw2665%2255%1845%1538%1230%923%615%
June 202340raw2768%2460%2050%1743%1435%1230%1025%
March 202340raw2768%2358%2050%1743%1435%1025%615%
November 202240raw2665%2153%1743%1435%1128%820%513%
June 202240raw2870%2563%2050%1845%1538%1230%923%

Component 52, 13 sittings. The large figure is the raw mark Cambridge published; the small figure is that mark as a percentage of the paper total on its own row, rounded to the nearest whole number.

Component 53

SittingMax markABCDEFG
June 202640raw2870%2460%2153%1845%1538%1230%923%

Component 53, 1 sitting. The large figure is the raw mark Cambridge published; the small figure is that mark as a percentage of the paper total on its own row, rounded to the nearest whole number.

Component 61

SittingMax markABCDEFG
June 202640raw2768%2358%2050%1743%1435%1230%1025%
November 202540raw2768%2255%1845%1640%1333%1025%718%
June 202540raw2870%2460%2050%1743%1435%1230%1025%
November 202440raw2665%2255%1948%1640%1333%1025%718%
June 202440raw2870%2460%2153%1845%1538%1333%1128%
November 202340raw2665%2255%1845%1538%1230%923%615%
June 202340raw2870%2460%2153%1845%1640%1333%1025%
November 202240raw2665%2153%1743%1435%1128%820%513%
June 202240raw2768%2563%2153%1948%1538%1333%1128%

Component 61, 9 sittings. The large figure is the raw mark Cambridge published; the small figure is that mark as a percentage of the paper total on its own row, rounded to the nearest whole number.

Component 62

SittingMax markABCDEFG
June 202640raw2870%2460%2153%1845%1538%1230%923%
March 202640raw2563%2255%1948%1640%1333%1025%718%
November 202540raw2665%2255%1948%1640%1333%1025%718%
June 202540raw2870%2460%2050%1743%1435%1128%820%
March 202540raw2973%2563%2255%1845%1538%1128%718%
November 202440raw2665%2255%1948%1640%1333%1025%718%
June 202440raw2768%2358%1948%1640%1333%1128%923%
March 202440raw2768%2460%2153%1845%1538%1128%718%
November 202340raw2665%2255%1845%1538%1230%923%615%
June 202340raw2870%2460%2050%1743%1435%1230%1025%
March 202340raw2768%2358%2050%1743%1435%1025%615%
November 202240raw2665%2153%1743%1435%1128%820%513%
June 202240raw2870%2563%2050%1845%1538%1230%923%
March 202240raw2665%2255%1845%1538%1128%718%410%

Component 62, 14 sittings. The large figure is the raw mark Cambridge published; the small figure is that mark as a percentage of the paper total on its own row, rounded to the nearest whole number.

Component 63

SittingMax markABCDEFG
June 202640raw2768%2358%1948%1640%1333%1128%923%
November 202540raw2870%2460%2153%1845%1538%1230%923%
June 202540raw2768%2358%1948%1640%1333%1128%923%
November 202440raw2665%2255%1948%1640%1333%1025%718%
June 202440raw2768%2358%1948%1640%1333%1128%923%
November 202340raw2665%2255%1845%1538%1230%923%615%
June 202340raw2768%2358%2050%1743%1435%1230%1025%
November 202240raw2665%2153%1743%1435%1128%820%513%
June 202240raw2768%2460%2153%1845%1538%1333%1128%

Component 63, 9 sittings. The large figure is the raw mark Cambridge published; the small figure is that mark as a percentage of the paper total on its own row, rounded to the nearest whole number.

Where these numbers come from

Cambridge Assessment International Education, published grade thresholds. One document per sitting, named below exactly as Cambridge names it, so any figure in the tables above can be checked against the page it was copied from.

What to do with this

A boundary is only useful next to the paper it came from. These are the pages on this site for the same syllabus.