How to be a Good Science Fair Judge

Attention Judges

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It is a good idea when you approach a student to introduce yourself and describe your background. As a judge, it is most important for you to show the students that you are both fair and knowledgeable. Your fairness is indicated by a few simple actions:

  • You spend about the same amount of time with each student
  • You listen to the student's explanation of the project
  • The questions you ask are intended to find out more about the project and how it was done -- not to embarrass or intimidate the student

Asking Questions
Your best tool in judging is your ability to ask questions. Be sensitive to what the student knows. You can always ask questions that the student can answer, and keep a conversation going for twenty minutes. There are some questions all students should be able to answer, including variations on:

  • How did you come up with the idea for this project?
  • What did you learn from your background search?
  • How long did it take you to build the apparatus?
  • How did you build the apparatus?
  • How much time (many days) did it take to run the experiments (grow the plants) (collect each data point)?
  • How many times did you run the experiment with each configuration?
  • How many experiment runs are represented by each data point on the chart?
  • Did you take all data (run the experiment) under the same conditions, e.g., at the same temperature (time of day) (lighting conditions)?
  • How does your apparatus (equipment) (instrument) work?
  • What do you mean by (terminology or jargon used by the student)?
  • Do you think there is an application in industry for this knowledge (technique)?
  • Were there any books that helped you do your analysis (build your apparatus)?
  • When did you start this project? or, How much of the work did you do this year? (some students bring last year's winning project back, with only a few enhancements)
  • What is the next experiment to do in continuing this study?
  • Are there any areas that we not have covered which you feel are important?
  • Do you have any questions for me?

(Note: these are only suggestions to keep the dialog going. You may find other questions to be more useful in specific interviews.)

One type of question to avoid is "Why didn't you do....?" Probing questions are useful to stimulate the thought processes of the student. A solution or extension to the work presented may be obvious to you with all of your years of experience, but the student may not understand why you're asking such a question. If you ask a question of this type, be sure to imply the correct intent, as in "Could you have done... ?" or "What do you think would have happened if you had done....?" When phrased this way the question is an invitation for the student to think about the experiment in a different way, and can turn the question into a positive experience.

Guiding the Discussion
Sometimes we come across projects in technical areas with which we are intimately familiar, and the student just didn't get it -- they made some incorrect assumptions, missed a key indicator in the data, came up with a false conclusion, or didn't look at or understand some common principles. It can be tempting to share your knowledge about the topic, to help the student appreciate what happened (or should have happened) in the experiment. Some judges have been observed to enthusiastically pontificate while a student stood idly listening. Before you do this, please consider that these students are smart, and the next judge may hear the student parroting back the knowledge you imparted. You may try with your questions to lead the student toward the right answers, but please don't give the answers. If you really feel compelled to make explanations, make your points on the comments section of the marking sheet or save them until near the end of the judging time when your knowledge will not be relayed to judges following you.

  • Your conversation should resemble a discussion with an esteemed colleague who is having difficulty with some research -- together, you talk through the situation to mutually arrive at improved answers;
  • The student should be doing most of the talking;
  • Coax and/or coach the student into realizing and describing the correct conclusions; it's the student's project, not yours;
  • Encourage the student to conduct more experimentation in order to verify the new conclusions.

Improving Communication
Since you are a judge, most students instinctively think of you as an intimidating figure. The more you can dispel this image, the more likely you are to help the student be less nervous, and get a better discussion. Again, simple things can make a difference:

  • Make eye contact with the student;
  • If the student is short and you are tall, stoop, bend, or squat down to lower your eye level
  • Tip your head to the side a little to indicate interest (this is a universal nonverbal form of communication; even your dog does it);
  • If you wear glasses, look at the student through them, not over the top of the frames;
  • Whenever a student shows a good idea, clear chartsmanship, a clever way to get expensive results with inexpensive equipment, or anything you can compliment, be sure to use a compliment;
  • Use a tone of voice that indicates interest or inquisitiveness, not scepticism or contempt.

To assure the perception of fairness, you also need to make sure that one student doesn't monopolize your time. Some have a well-rehearsed pitch that may prevent you from having a chance to interact with the student. You have to find some way to break the pattern, and again, your tool is questioning. Politely interrupt with a question, usually in the form of "I'm sorry, I didn't quite catch the relationship between that adjustment and this result," or even some of the "any student can answer" questions, like "How many times did you run the experiment with each configuration?" and "How many experiment runs are represented by each data point?" The idea is not to stop the student from talking, but to get the student to interrupt the tape recording and think about what is being communicated to you.

Many of these students are exceptionally bright, and it is easy to think -- when facing an incredibly impressive display and a supremely confident student -- that this student's research is beyond your knowledge. If a project is really and truly completely outside your experience, you are still knowledgeable in the area of problem-solving and the scientific method. Concentrate on these aspects rather than the details of a particular project.

Young people have largely developed their conversation techniques through their interactions with other young people. They tend to actively converse on topics that they are most knowledgeable about. When teenagers are faced with a discussion they don't grasp, they typically lose interest and look bored. If you keep appearing to be interested, no matter what is said, the student will assume you grasp what's going on. When you ask questions, even the "any student can answer this" type of questions, the student assumes you have kept up with the discussion and are maintaining an interest in their work. You may be struggling during the student's whole pitch to come up with something -- anything -- to ask that doesn't sound completely ignorant, but the student doesn't know how little of the information makes sense to you. Keep asking questions until it does make sense. No matter how you handle this situation, please do not tell the student how little you understand (we don't want a student to tell a parent that the judges didn't know anything about the topic). Remember, you are not the only judge who will talk to this student. If something is not completely clear, talk to the Chief Judge; judges who are familiar with the applicable science are likely to have sorted it all out.

Determining the Winners
When you are completing your marking sheet, you can use a few simple criteria for selecting the winners:

  • The quality of the student's work is what matters, not necessarily the amount of work;
  • Team projects are judged like other projects -- it is the quality of the work that matters (an individual project of equal quality to that of a team project may be ranked higher because of the comparatively greater effort required by the individual);
  • A less sophisticated project that the student understands gets higher marks than a more sophisticated project that is not understood;
  • Access to sophisticated lab equipment and endorsements from professionals do not guarantee a high quality project (Did the student really understand what was going on?);
  • It's okay if the student ended up disproving the objective or hypothesis of the experiment.

High marks go to:

  • Genuine scientific breakthroughs
  • Discovering knowledge not readily available to the student
  • Correctly interpreting data
  • A clever experimental apparatus
  • Repetitions to verify experimental results
  • Predicting and/or reducing experimental results with analytical techniques
  • In engineering categories, experiments applicable to the "real world"
  • Ability to clearly portray and explain the project and its results

Low marks go to:

  • Ignoring readily available information (e.g. not doing basic library research)
  • An apparatus (e.g. model) not useful for experimentation and data collection
  • Improperly using jargon, not understanding terminology, and/or not knowing how equipment or instrumentation works
  • Presenting results that were not derived from experimentation (e.g. literature search)

Although the most obvious reason for your being a judge at the Science Fair is to assist in selection of the projects that get prizes, the good judge knows that this is an important experience in the life of every participant. Please do your best to make sure that all of the participants remember the Science Fair as a positive experience in their lives.

This advice to science fair judges was, for the most part, originally prepared by the California State Science Fair Committee and is reproduced here because of the high quality of this advice and applicability to our science fair.