CS 115: Introduction to Computer Science 1

Sample Marking Rubric

The following is a general example of the marking rubric used to mark CS 115 assignments. The weight of each catagory varies between each assignment. A heading marked "Global" indicates that the judgement for this criterion is based on your whole assignment, not just one question. Note that for Correctness marks (which are determined on a per question basis), the number of tests you are required to pass to reach the next level will vary depending on the number of test cases. In this example, the grading is based on a situation where there are only 4 test cases. A question will have more or less tests cases depending on its nature.

Example

  Level 0: Very Poor Level 1: Weak Level 2: Passable Level 3: Good Level 4: Excellent  
Contracts (Global) No contracts were included. Two or more contracts for required functions are either missing and/or have significant errors. Maximum mark if only 1 solution submitted. One or more contracts for required functions are missing and/or have significant errors in syntax or types specified. Maximum mark if only 2 solutions submitted, and contracts correct in those. Contracts were included for all functions, including helpers, and were mostly correct, but with multiple errors. Maximum mark if only 3 solutions submitted, with correct contracts in each. Contracts were included for all functions, including helper functions, and were correct with at most one error. Contracts (Global)
Purpose (Global) Purpose statements are not included for any required functions. Purpose statements are completed for 1-2 required functions, but they are vague and/or omit reference to parameters. Maximum mark if only 1 solution submitted. The purpose is included for at least 3 required functions. However some are missing, or those present are vague, or often missing the role of some parameters. Maximum mark if only 2 solutions submitted, and those purpose statements are complete. The purpose is included for all required functions, and some helpers. The statements are generally clearly specified and most parameters are mentioned, but there are multiple minor errors. Maximum mark if only 3 solutions submitted, and those purpose statements are complete. The purpose is included for all functions (required and helpers). The statements and roles of parameters are clearly specified, with at one error or omission. Purpose (Global)
Examples (Global) Examples are not included for any functions. 1-2 of the required functions include examples, but may miss some major uses of those functions. Maximum mark if only 1 solution submitted. Almost all required functions include examples that show at least some uses of the function. Proper syntax used. Maximum mark if only 2 solutions submitted, and examples complete in those. All required functions include examples that show at least one common usage for each function. Proper syntax used. Maximum mark if only 3 solutions submitted and examples complete in those. All required functions, and helpers, include examples that show how to use the function in each of the common uses, with at most one omission. Proper syntax is used. Examples (Global)
Tests (Global) No tests included for any functions. Tests missing from multiple required functions, and/or major syntax errors. Maximum mark if only 1 solution submitted. A minimal choice of tests appear in all required functions, and mostly use appropriate check-expect, check-within syntax. Maximum mark if only 2 solutions submitted, and testing in those functions is complete. Tests appear in all required functions, but may be missing for some helpers. Test cases cover most major outcomes, boundary points and special cases. Syntax correct. Maximum mark if only 3 out of 4 solutions submitted, and testing in those functions is complete. Tests appear in all functions, including helpers. Syntax correct. Test cases cover all possible outcomes, boundary points and special cases, with at most 2 total omissions. Tests (Global)
Constants and Meaningful Names (Global) No constants used. Some constants used, but poorly named and role is not clear. Maximum mark if only 1 out of 4 questions submitted. Some constants used, with meaningful names and clear roles, but missing is several other important places. Maximum mark if only 2 questions submitted. Constants used in multiple places, but not enough or names not meaningful. Maximum mark if only 3 questions submitted. Constants used in almost all needed places, and meaningful names used. Constants and Meaningful Names (Global)
Helper Functions (Global) Helper functions are not used anywhere. At least one helper function is used, but its role is not entirely clear. Some helper functions are used, but not in all appropriate places. Helper function(s) used meaningfully, where needed. Helper Functions (Global)
Solution Techniques (Global) No solutions completed. Maximum mark if only one solutions submitted. The solutions had a lot of unnecessary complexity. Maximum mark if only two solutions submitted. Some of the solutions had some unnecessary complexity. Maximum mark if only three solutions submitted. Solution techniques are relatively straightforward. Solution Techniques (Global)
Whitespace (Global) Very poor or no effort to use whitespace effectively. For example, many function definitions have long, unbroken lines or there are no blank lines to separate logical units of the program. Weak use of whitespace. For example, function definitions are broken into shorter lines but at illogical places, code is indented inconsistently, or little use of blank lines to improve readability. Maximum mark if only 1 questions submitted. Passable use of whitespace. For example, lines of code are broken at logical places but aren't indented consistently. Maximum mark if only 2 questions submitted. Most lines of code have an appropriate length or are broken at logical places. Lines are indented consistently. Blank lines are used at appropriate places to improve readability. Maximum mark if only 3 questions submitted. All lines have an appropriate length or are broken at logical places and are indented according to the DrScheme style. Blank lines are used at appropriate places to improve readability. Whitespace (Global)
Q1: Correctness No test passed. 1 test passed. 2 tests passed. 3 tests passed. All 4 tests passed Q1: Correctness
Q2: Correctness No test passed. 1 test passed. 2 tests passed. 3 tests passed. All 4 tests passed Q2: Correctness
Q3: Correctness No test passed. 1 test passed. 2 tests passed. 3 tests passed. All 4 tests passed Q3: Correctness
Q4: Correctness No test passed. 1 test passed. 2 tests passed. 3 tests passed. All 4 tests passed Q4: Correctness
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