![]() The paper is referred to as Bloom’s 2 sigma problem, since although ideal, small group tutoring is often impractical due to time and cost constraints. In fact about 80% of students under conventional teaching performed relatively poorly, compared with how they may have performed under tutoring. And that conversely, it was the way they were being taught, rather than an inherent lack of ability that was preventing them from achieving mastery. The results are still referenced over 30 years later because they demonstrated that most students have the potential to achieve mastery of a given topic. The tutoring group also spent more time on learning tasks and had the most positive attitude of the three groups at the end of the experiment. ![]() Continued abuse of our services will cause your IP address to be blocked indefinitely.In 1984 Benjamin Bloom authored a seminal paper called The two sigma problem: the search for methods of group instruction as effective as one-on-one tutoring.īloom presented findings that one-on-one tutoring, followed by regular tests and feedback, resulted in the average student performing 2 standard deviations (sigma) above the average of the control class.Ģ standard deviations is roughly 2 whole grades, say a C to an A. Please fill out the CAPTCHA below and then click the button to indicate that you agree to these terms. If you wish to be unblocked, you must agree that you will take immediate steps to rectify this issue. If you do not understand what is causing this behavior, please contact us here. If you promise to stop (by clicking the Agree button below), we'll unblock your connection for now, but we will immediately re-block it if we detect additional bad behavior.
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