The document discusses the internal assessment (IA) component of the IB Biology course, which makes up 24% of a student's overall IB score. The IA consists of laboratory reports written by students and graded internally by the teacher. Reports are assessed based on three criteria: design, data collection/processing, and conclusion/evaluation. Students can earn up to 36 points across multiple reports. The document provides examples of scored reports and explains the additional criteria of manipulative and personal skills. It emphasizes maintaining portfolios in an exam-ready format. The external exam, worth 76% of the score, consists of multiple choice, short answer, and essay questions testing core and optional topics, with higher level students assessed on additional material.

1. Internal Assessment: IB Biology
What in the world is Internal Assessment?
Teacher-based or Internal Assessment (IA) makes up 24% of your mark for IB Biology (what the college
receives). Each IB Group 4 Experimental Science student maintains a portfolio (“Practical Scheme of Work”
or PSOW in IB lingo). This portfolio contains laboratory work that I have graded (internally assessed) using
IB’s scoring rubric. The IB Organization (IBO) mandates the number of hours we spend in the laboratory but
not the number or topics of Internally Assessed lab reports. IBO does stipulate that, in a two-year Higher
Level (HL) course, student work must be judged against three main criteria at least twice. If any of the
criteria are assessed more than twice, then the student will be awarded the two highest scores. The three
formative Internal Assessment Criteria are:
• Design
• Data Collection and Processing
• Conclusion and Evaluation.
Each of the criteria is subdivided into three aspects. Descriptions are provided on my website to indicate
what is needed to meet the requirements of a given aspect completely (2 pts), partially (1 pt), or not at all (0
pts). These judgments are then translated into a score out of a maximum of 6 for each of the three criteria
(see example below). Since each criteria is assessed twice, you can earn up to 36 points from your written
lab reports.
Example: Lab Report #2
DESIGN
Aspect 1 Aspect 2 Aspect 3
Level/Marks Defining the problem and Controlling the Variables Developing a method for collection of
selecting variables data
Complete/2 Formulates a focused Designs a method for the Develops a method that allows for the
problem/research question and effective control of the collection of sufficient relevant data.
identifies the relevant variables.
variables.
Partial/1 Formulates a problem/research Designs a method that makes Develops a method that allows for the
question that is incomplete OR some attempt to control the collection of insufficient relevant
identifies only some relevant variables. data..
variables.
Not at all/0 Does not identify a Designs a method that does Develops a method that does not allow
problem/research question AND not control the variables. for any relevant data to be collected.
does not identify any relevant
variables
Final Mark out of possible 6 = 4
Example: Lab Report #5
DATA COLLECTION AND PROCESSING (DCP)
Aspect 1 Aspect 2 Aspect 3
Level/Marks Recording raw data Processing raw data Presenting raw data
Complete/2 Records appropriate quantitative and Processes the quantitative Presents processed data appropriately
associated qualitative raw data, data correctly. and, where relevant, includes error bars
including units and uncertainties and uncertainties.
where relevant.
Partial/1 Records appropriate quantitative and Processes quantitative data, Presents processed data appropriately,
associated qualitative raw data, but but with some mistakes but with some mistakes and/or
with some mistakes or omissions. and/or omissions. omissions.
Not at all/0 Does not record any appropriate No processing of quantitative Presents processed data inappropriately
quantitative raw data OR raw data is raw data is carried out OR OR incomprehensibly.
incomprehensible. major mistakes are made in
processing.
Final Mark out of possible 6 = 4

2. Example: Lab Report #5
CONCLUSION AND EVALUATION (CE)
Aspect 1 Aspect 2 Aspect 3
Level/Marks Concluding Evaluating Procedure(s) Improving the Investigation
Complete/2 States a conclusion, with Evaluates weaknesses and Suggests realistic improvements in
justification, based on a reasonable limitations. respect of identified weaknesses and
interpretation of the data. limitations.
Partial/1 States a conclusion based on a Identifies some weaknesses Suggests only superficial improvements.
reasonable interpretation of the and limitations, but the
data. evaluation is weak or missing.
Not at all/0 States no conclusion OR the Identifies irrelevant Suggests unrealistic improvements.
conclusion is based on an weaknesses and limitations.
unreasonable interpretation of the
data.
Final Mark out of possible 6 = 5 TOTAL: 13/18
Besides the three formative IA criteria, IBO asks teachers to judge student performance in two other areas:
Manipulative Skills and Personal Skills. Each of these criteria can earn a maximum of 6 points bring your
total possible IA score to 48 points. Remember, these 48 points are worth 24% of your overall IB score.
Manipulative Skills are evaluated in the lab during experiments throughout the course and include such
things as following instructions accurately, competency with lab equipment, and lab safety. Personal Skills
are evaluated once during the independently conducted Group 4 Experiment in late winter.
How do I write IB Laboratory Reports?
Every time we do an experiment (as opposed to a paper activity), you will write a laboratory report. Follow
the format on the handout titled: Honors/IB Biology Lab Report Format. Your report will be read and
assessed on one or all three of the formative IA criteria.
**Please write “Moderator Friendly” lab reports. This means:
- type up the lab report;
- no plastic jackets;
- no pencil unless used for a sketch;
- white paper;
- single-sided;
- affix added paper (such as a square of graph paper) to a report by taping around
it on all four sides;
- your complete IB number on the top right corner of every page.
Because the IBO selects portfolios for moderation at a moment’s notice, portfolios MUST be maintained in
ready-to-mail condition. At the latest, all portfolios will be completed and ready to mail off by the beginning
of March.
NOTE: All new content will be completed by early April. This will be followed by an intense review of as
much material as possible in preparation of the exam (external assessment) in May.

3. External Assessment: IB Biology
What in the world is External Assessment?
The External Assessment is the exam taken in May and it makes up 76% of your mark for IB Biology (what
the college receives). What you need to study for this exam depends on whether you are taking the
Standard Level (SL) exam or the Higher level exam (HL). If you are a full IB candidate, you will need to take
3 HL exams (the other 3 exams can be SL). Both Honors Biology (Year 1) and IB Biology (Year 2) are
taught at the HL level. In order to help you decide which exam you should take, as well as to help you focus
your studying in May, the differences between SL and HL are outlined below.
The IB exam is broken into 3 “papers” or parts. Paper 1 is a multiple choice test which consists of either 30
(SL) or 45 (HL) questions. Paper 2 will be taken the same day as Paper 1 and in this part of the exam, you
will be interpreting scientific data based on your knowledge of Biology (questions come from the “Topics” for
your level- see below). The format for the answers is short answer or sketches with accompanying labels.
Paper 3 will be taken the next day and will test your knowledge on two of the Options listed below (you will
be given a choice as to which two you want to address).
TOPICS
SL and HL: HL only:
Topic 1: Statistical Analysis Topic 7: Nucleic Acids & Proteins
Topic 2: Cells Topic 8: Cell Respiration & Photosynthesis
Topic 3: The Chemistry of Life Topic 9: Plant Science
Topic 4: Genetics Topic 10: Genetics
Topic 5: Ecology & Evolution Topic 11: Human Health & Physiology
Topic 6: Human Health & Physiology
OPTIONS
SL only: SL and HL:
Option A: Human Nutrition & Health Option D: Evolution HL only:
Option B: Physiology of Exercise Option E: Neurobiology & Behavior Option H: Further Human Physiol.
Option C: Cells & Energy Option F: Microbes & Biotechnology
Option G: Ecology & Conservation
As you can see, Year 1 of IB Biology (Honors Biology) is very important!! Do not wait to review these topics
in May!! You may be taking several exams and as a result, study time becomes very precious and is never
enough. Time management is going to be essential to your success! Also, when you allocate study time in
May, you should focus on IB’s detailed syllabus. You can access this syllabus through my website:
www.nphsscience.com (look under “resources”). For example, since you will not have time to study all the
material for every option, focus on two you feel most comfortable with in order to prepare for Paper 3.
NOTE: All students, regardless of whether they are SL or HL, will be expected to learn the material taught in
this class. Class exams are not differentiated by level.