Efficacy Scale

Number of Items

Cronbach Alpha

Spearman-Brown

Guttman Split-Half

ESBI

20

.96

.90

.90

Understanding

5

.86

.88

.81

Planning

5

.94

.93

.90

Teaching

5

.91

.90

.84

Assessment

5

.93

.93

.88

TESPE

16

.89

.87

.86

Motivation

4

.69

.68

.67

Analysis of Skills

4

.68

.73

.73

Preparation

4

.79

.82

.81

Communication

4

.84

.79

.79

TSES

12

.84

.79

.79

Student Engagement

4

.82

.80

.80

Instruction

4

.74

.72

.72

Class Management

4

.82

.81

.81