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  Enrolling Achievement Testing

All students, starting at the second grade, are sent the 1970 edition California Achievement Test (CAT). New students receive this test prior to curriculum development; re-enrolling students receive it with their course materials.

For new students, CLASS uses this test to determine which courses to assign. CLASS does not use it to meet any state requirements. Because this test is used to determine a curriculum, it is important that the student do the best he can. To this end, we recommend you establish an atmosphere that will facilitate concentration when taking the CAT.

Re-enrolling students receive the CAT for annual testing purposes only. Although not required by CLASS, we send this test so you can annually measure your student’s progress.

Why the 1970 Edition CAT?
CLASS uses the 1970 edition of the CAT because it offers a consistent benchmark for comparing student abilities. This consistency allows us to make more accurate choices when selecting a student’s curriculum. The 1970 edition was selected because it is more demanding than the more recent editions—and therefore more in line with our curriculum.

Are Other Tests Acceptable?
For enrollment purposes CLASS does accept the Iowa Test of Basic Skills, as well as other editions of the CAT, if the test:

1.  

2.  

3.  
is appropriate for the grade level entering,

was taken within six months of enrollment, and

shows Grade Equivalent scores for the following seven major test areas:

  Reading
Comprehension
Mechanics

Mathematics
Computation
Concepts and Problems
Language
Mechanics
Usage and Structure
Spelling

Because of differences in the test, CLASS does not accept the Stanford Achievement Test for enrollment purposes. If this test was recently taken, your student will still need to take the test we provide.

When to Take the CAT
  New Students
  Unless you have taken the CAT within the last six months through Christian Liberty Press' Independent Testing Service (or some other service), new students are sent the test after their application has been received and prior to curriculum development.

If you have acceptable tests that were taken outside of CLASS, you should include a copy with your enrollment application. If the test is acceptable, we will use it to develop your student’s curriculum; we will not send a CAT with your curriculum materials for this enrollment.

  Re-enrolling Students
  Because CLASS does not require the CAT for re-enrolling students, you may take the test anytime throughout the year. However, we recommend that your student take the test at the same time each year (e.g., at the start or the end of his school year) so that an accurate progression of achievement can be measured.

  Pre-Test Requested
  Some re-enrolling families request that their student be pre-tested prior to curriculum development. They usually do this for one or more of the following reasons:

1.  


2.  


3.  
The student was remedial in a particular subject area but has completed additional course work outside of CLASS to bring him up to grade level.

The student has done additional course work outside of CLASS and the family wants to have him removed from Special Status.

The student has done additional course work outside of CLASS and the family wants him to skip a grade level (not allowable at high school).

Unless additional course work was pursued outside of CLASS, pre-testing a re-enrolling student will rarely affect his course assignment (usually it only delays the arrival of his books). The information presented in most courses is built upon the previous year’s material. Skipping a grade level in a subject can cause gaps in a student’s learning that can adversely affect his education in the years to come.

How CLASS Interprets Your Results
Based on a student’s achievement test scores, the Curriculum Department staff will generally respond in one of four ways:

1.  


2.  




3.  



4.  
Scores fall within the standard range
Staff assigns standard grade-level curriculum.

Scores fall below the standard range but within two grade levels of the standard range
Staff will keep the student in the requested grade level but will assign remedial curriculum materials in the areas which are below standard. In the case of high school transfer students, our staff may require that a student be placed in a lower grade level.

Composite score falls more than two grade levels below the standard range
Staff communicates to the family and awaits the family’s response before proceeding. Further correspondence may be required in the case of high school transfer students.

Scores exceed the standard range
Staff may assign advanced materials in course categories that exceed the standard range. On rare occasions, or staff may encourage a student to skip a grade level if all scores are extremely high.

Once the curriculum has been developed and shipped, we depend on your feedback to refine the curriculum when necessary. If you disagree with a particular course assignment—an assignment is either too challenging or not challenging enough—you may request a curriculum adjustment.

How to Interpret Results
Several different numbers are listed on your California Achievement Test results sheet. Most of these are calculated based on a norm group (the original group of students tested on which the test is standardized). Results are listed by academic area. Below are basic definitions for these scores.

A printable version of this information is also available.

  Raw Scores
  Raw scores are the actual number of correct answers within a given test section, and are used to calculate the Grade Equivalent, Percentile, and Stanine results. They should not be used for any kind of comparison or statistical calculation since each test section varies in the difficulty and number of questions.

  Grade Equivalent Scores
  Grade equivalent scores represent the grade level (year and month separated by a decimal point) of a student’s ability compared to the median score of students at the same academic level.

Scores that are above a student’s grade level do not by themselves indicate proficiency to skip to the next grade level in the particular academic areas. These scores more likely show an understanding of only some of the concepts of that higher grade. Conversely, scores below a student’s grade level may indicate a gap of understanding in those academic areas. Scores equal to a student’s grade level are considered the minimum for grade level ability.

  Percentile Scores
  Percentile scores are equivalent to the percentage of students from the norm group who received lower scores than the student. For example: a student with a percentile score of 73 means that the student did better than approximately 73 percent of the students in the norm group. Percentile scores do not represent the number of questions answered correctly.

Percentiles are useful for comparing a student’s performance over several sections on the test. However, because they are not measured on an equal scale of units, they are not suitable for most statistical calculations.

  Stanine Scores
  Derived from the term STAndard score from a NINE-unit scale, stanines are based on the mean of the norm group (who are given the score of 5) and a standard deviation of 2.0. Scores are determined by the amount of standard deviation from the norm group, in approximately one-half standard deviation increments.

The following table lists the meaning of each score:

  9  
8  
7  
Highest level
High level
Well above average

6  
5  
4  
Slightly above average
Average
Slightly below average

3  
2  
1  
Well below average
Low level
Lowest level

Stanine scores are useful in calculating means, correlation coefficients, and other statistics which are meaningful to test evaluators.

Independent Testing Service
Christian Liberty Press offers an Independent Testing Service for students who need to be tested but do not want to enroll in a home school program.

CLASS will accept the test results of students taking the Independent Testing Service if the test:

1.  

2.  
is appropriate for the grade level entering, and

was taken within six months of enrollment.

If your Testing Service results are accepted, you will receive a discount in your enrollment cost equal to the cost of the testing service.
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