This study is aimed at :
a) Studying teacher effectiveness in relation to locus of control.
b) Studying the interrelation of teacher effectiveness and locus of control.
To achieve the objectives of the study, 'Teacher Effectiveness Scale' by Dr. Parmod Kumar and D. N. Mutha&Rotter's locus of control scale were used. A sample of 250 Teachers was selected on the basis of random sampling method. Descriptive statistics were used to analyse the data. The t-value was applied. Results indicate that a significant difference exists between teacher effectiveness of male and female teachers&govt. and private teachers. A significant difference exist between locus of control of male and female teachers&private and govt. teachers. There is negative relation between teacher effectiveness and locus of control of teachers.