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Making Sense of Scale Scores and Raw Scores The Cherry Tomato Analogy John Fessenden [email protected]

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Making Sense of Scale Scores and Raw Scores. The Cherry Tomato Analogy. John Fessenden [email protected]. Posted at: lead4ward.com/resources. Confusing terms . . . . Passing Standard Pass Rate Pass Rate Standard. Level of performance necessary to “pass” the test - PowerPoint PPT Presentation

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Page 1: Making Sense of Scale Scores and Raw Scores

Making Senseof

Scale Scores and Raw Scores

The Cherry Tomato Analogy

John [email protected]

mailto:[email protected]
Page 2: Making Sense of Scale Scores and Raw Scores

Posted at: lead4ward.com/resources

26 57%

http://www.lead4ward.com/resources
Page 3: Making Sense of Scale Scores and Raw Scores

Confusing terms . . . 1. Passing Standard

2. Pass Rate

3. Pass Rate Standard

– Level of performance necessary to “pass” the test– Expressed as scale score – Raw score may vary year-to-year

– % of students meeting the Passing/Performance Standard– % meeting Level II– % meeting Level III

– Accountability targets– Pass rate necessary to achieve a particular rating

Page 4: Making Sense of Scale Scores and Raw Scores

STAAR Performance StandardsScale Scores vs. Raw Scores

2012 Level II =

1458 points

Scales scores . . .• make sense to

psychometricians

• ensure consistent level of performance across years

2012 Level II = 25 questions (54%)

Raw scores . . .• make sense to

teachers

• are likely to differ from year-to-year based on questions on that year’s test

Grade 5Reading

2013 Level II =

1458 points2013 Level II = 26 questions (57%)

Page 5: Making Sense of Scale Scores and Raw Scores

STAAR Performance StandardsThe Cherry Tomato Analogy

• How many cherry tomatoes = 2 lbs?• First trip to store: might be 25• Next trip: might be 26

5

2 lbs.

2625

Page 6: Making Sense of Scale Scores and Raw Scores

2 lbs.

STAAR Performance Standards• State assessment also uses a scale (but uses points, not pounds)• How many questions correct = 1458 Scale Score Points?• Spring 2012 Grade 5 Reading: 1458 points = 25 correct (54%)• Spring 2013 Grade 5 Reading: 1458 points = 26 correct (57%)

6

1458 Scale Score Points

Grade 5 Reading - Spring 2012 Grade 5 Reading – Spring 2013

25(54%)

26(57%)

Page 7: Making Sense of Scale Scores and Raw Scores

Posted at: lead4ward.com/resources

26 57% 31 67% 36 78%

27 54%

28 54% 44 85%

Spring 2013Raw Score Equivalents

(Grades 5 and 8)

≈75%

≈55%

≈85%

≈62%

http://www.lead4ward.com/resources
Page 8: Making Sense of Scale Scores and Raw Scores

• adsfad

http://www.tea.state.tx.us/student.assessment/staar/convtables/

http://www.tea.state.tx.us/student.assessment/staar/convtables/
Page 9: Making Sense of Scale Scores and Raw Scores
Page 10: Making Sense of Scale Scores and Raw Scores

Questions?John Fessenden

[email protected]

mailto:[email protected]

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