Why Sigma?

Sigma, by definition, is the eighteenth letter of the Greek alphabet and in it's lower case form (σ), it typically denotes standard deviation, or in financial markets, risk. Well, why is that relevant?

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Let's take two students (A and B) as an example. They both sit ten mock exams prior to exam day and both score an average of 90%. Who is more likely to score higher on exam day? 

Student A's mock results: 80, 80, 80, 80, 80, 100, 100, 100, 100, 100

Student B's mock results: 88, 88, 88, 88, 88, 92, 92, 92, 92, 92, 92 

Answer: Student B, because they have a lower standard deviation of results (σA = 10.5 and σB = 2.1)

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My philosophy to teaching is very simple: preparation is the cornerstone to minimizing risk. Exam days can be filled with stress, anxiety and unexpected events. Exam questions can be worded or presented in an unforeseen style. My aim is to prepare my students to the highest possible standard by; 1) developing a deep understanding of the core and "non-core" concepts of the curriculum and 2) developing the "soft" skills required to manage time pressures and exam day stress confidently.