IB Science Scoring Guide
For Assessing CONCLUSION and EVALUATION
Student Name ______________________________________________________________
Lab Title __________________________________________________________________
CE
G: Concluding
H: Evaluating Procedure(s)
I: Improving the Investigation
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COMPLETE: States a conclusion, with justification,
based on a reasonable interpretation of the data.
In this lab, I
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
In this lab, I
summarized the results.
states a valid conclusion with justification/explanation
based on an accurate interpretation of the results; I
explained what the results mean - why the results are or
are not as expected

told the reader where to find the evidence (graph or
table) that supports the conclusion

answered the original research question, if an original
research question is posed

explained how the data supports or refutes the
hypothesis, if hypothesis stated

gave comparable values obtained from the literature, if
appropriate

cited literature reference correctly, if literature value
used
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PARTIAL: States a conclusion based on a
reasonable interpretation of the data.


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my conclusion is reasonable, but lacks adequate
justification
one of the components above is insufficiently executed
Other:
NOT AT ALL: States no conclusion or the
conclusion is based on an unreasonable
interpretation of the data.
In this lab,

my conclusion shows a major misinterpretation of the
results

one of the other components above contains major flaws
G: Complete (2) Partial (1) Not at All (0)
IB Score (0-6)
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
evaluated both the procedures and results.

evaluated the possibility of experimenter error (blunders).
I described the evidence (if present). If no such error was
present, I stated this.

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discussed relevant limitations of the results.

explained the effect of the error on the results, stating
whether errors made my results higher or lower than
expected. I included a discussion of my error
calculations.

evaluated the possibility of systematic and/or random
error(s). I described the evidence (if present). If no such
error was present, I stated this.
compared experimental error and random error and
explained the difference in terms of weaknesses in the
procedure.
PARTIAL: Identifies some weaknesses and
limitations, but the evaluation is weak or missing.
In this lab, I
In this lab,

COMPLETE: Evaluates weaknesses and
limitations.
Grade Book Point Score

evaluated procedures and results but missed at least one
error or limitation.

made irrelevant point(s) (stated that something is a
relevant error or limitation when it is not).
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Other:
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NOT AT ALL: Identifies irrelevant weaknesses and
limitations.
COMPLETE: Suggests realistic improvements
in respect of identified weaknesses and
limitations.
In this lab, I

stated specific ways to improve only the problems
you discussed in the previous section.

Addressed all of the errors described earlier with
suggestion s for improvement.
o suggested improvements that are realistic in my
school setting.

PARTIAL: Suggests only superficial
improvements.
In this lab, I
 made suggestions that are superficial
 didn’t make suggestions to address one or
more significant errors described in the
evaluation section
 Other:

NOT AT ALL: Suggests unrealistic
improvements.
In this lab,

My suggestions are unrealistic, inadequate, or have
other major flaws.
[It is inadequate to simply suggest the experiment be
redone or that that the original research question or
hypothesis be redone.]

I made no suggestions at all.
In this lab,


I am missing more than one of the above.

My evaluation shows a lack of understanding.
My evaluation is superficial, irrelevant, or
incomprehensible.
H: Complete (2) Partial (1) Not at All (0)
I: Complete (2) Partial (1) Not at All (0)
I confirm that this lab report is completely my own work and that no other student’s work was turned in
that was (even in part) taken from this.
Signed:______________________________________________________________ Date:___________________