Chapter 4- Assessment Flashcards
Forms of Assessment
Observation
Documentation of students’ talk
Interviews
Anecdotal Notes
Collection of students’ work over time
Traditional teacher made tests
Self-Assessment
Peer Assessment
Performance Tests
Reliability
The consistency of a measurement over time and repeated measurements
How to check for reliability:
If alternate forms of a test produce relatively the same scores, it is reliable
Validity
Does the assessment instrument measure what it is supposed to measure?
How to check for validity:
Compare test scores to separate observation OR compare students’ grades to their test score, similarity indicates validity.
Unbiased assessment
A test that does not unfairly favor a particular group.
Standardized test
Tests that have been constructed to be highly reliable and valid.
Norm-referenced test
An assessment that assesses students by comparing their performance to that of a norm group.
Students of the same age or grade-level
Criterion-referenced test
Assesses students by comparing their performance to a predetermined level of mastery
Florida standardized Tests
Advantage: diagnostic, placement, and remediation
Standard deviation
The more the data cakes vary from the mean, the greater the standard deviation, meaning that the data set has more spread.
Normal curve and standardized Tests
Pth percentile
A value at or below which P percent of the data fall.
Ex. 50th percentile is median at 50%
Quartiles
Values that divide an ordered data set into four portions
1st Q: 25%
2nd Q: 50% at or below
3rd: 75% at or below
Interquartile range: the difference between the first Q and third Q (IQR= Q3-Q1). Center 50% of the data.
Raw score
The total number of correct on an assessment
z-Score: is its distance in standard deviations from the mean of the scores in the assessment compute a z-score using,
(Raw score - mean) / (standard deviation)
Percentile rank
A derived score used to rank a students performance in relation to a specific group. Based on the percentage of scores in the comparison group that are the same or lower than it.
NOT the percentage of items answered correctly
Stanine
Scores that are derived from percentiles and compare test performance using nine intervals that are numbered in order from 1 to 9.
5th stanine: middle interval or 40th and 60th percentiles
1 to 3: below average
4 to 6: average
7 to 9: above average
Grade equivalent score
Used to describe a student’s performance in comparison to the performance of an average student at a specified grade level
Ranges from the beginning of kindergarten to the 9th month of 12th grade
Effect size
Expresses in standard deviations the difference between the increased or decreased achievement of an experimental group with that of a control group
Formative assessment
Before and during instruction
Screening, diagnostic, progress monitoring, and various informal classroom assessments