This study was conducted to measure the relationship with teachers' time management techniques and their class performance. Population of the study comprised of Senior School Teachers (SST) of Sahiwal district of Punjab. For measuring teachers' time management techniques a self-developed instrument "Time Management Scale"(TM) was formulated that was piloted on 100 SSTs with Chronbach alpha value.72 and validity was ensured by expert opinion. Instrument was administered personally by the researcher and 420 SSTs were selected by using simple random sampling technique. A positive relationship between teachers' time management techniques and their class performance was found. The study also inferred that teachers' lesson planning technique were very effective for their class performance due to affective time management. It was recommended that time management skills may be included in teacher training programmes to improve teachers' managerial and administrational activities.