The true spirit of education involves psychosocial grooming and character building of learners. Teacher's efficacy plays a vital role in achieving educational objectives. The effectiveness of teachers is usually evaluated through the academic grades of their students. Teacher's efficacy, however, is originally the ability of a teacher to improve the cognitive functioning and humanistic values of students. The current study developed and validated a new scale entitled the Qualiquant Teacher's Efficacy Scale (QTES) by involving 147 teachers and 59 students. The sample was selected thru a mixed method that involved convenient and purposive sampling techniques. QTES reflected strong validity and excellent reliability thru exploratory factor analysis, Cronbach's alpha, item-scale, and item-total correlations. QTES is a unique measure for teacher's efficacy because it defines teacher's efficacy through cognitive functioning and humanistic values, offers two parallel and separate versions for teachers and students, and quantifies the qualitative data.