Standardization Details of the Teaching Aptitude Test
1.Reliability: Cronbach’s Alpha
The reliability of a test measures the extent to which the variation in scores is due to true differences between people, or the characteristic being measured, or random measurement error. Reliability is generally assessed on the basis of internal consistency. The most common measure of internal consistency is Cronbach’s Alpha.

Cronbach's Alpha (J. Reynaldo A. Santos, 1999) determines the internal consistency or average correlation of items in a survey instrument to gauge its reliability. Alpha coefficient ranges in value from 0 to 1. The higher the score, the more reliable the generated scale is.

Test Name	Cronbach’s Alpha	Range
Teaching Aptitude Test	0.95	Within Acceptable Range

Topic Name	Cronbach’s Alpha	Range
Communication Skills	0.74	Within Acceptable Range
Patience	In Process	N/A
Leadership Skills	0.81	Within Acceptable Range
Interpersonal Skills	In Process	N/A
Ingenuity	0.8	Within Acceptable Range
Curiosity	0.7	Within Acceptable Range
Helpful Attitude	In Process	N/A

2.Validity:
Validity is the ability of a scale score to reflect what that scale is intended to measure. Kline’s (1993) definition is: 'A test is said to be valid if it measures what it claims to measure'.

Content Validity:
A test has content validity if it measures knowledge of the content domain of which it was designed to measure knowledge. Content Validity measures whether the test actually assesses the constructs it is designed for. It is a qualitative measure of validity. The Teaching Aptitude Test has been assessed by our Subject Matter Experts, who have approved all the items in the test