The problem under consideration was "Teachers' perception regarding determinants primary school students' dropout at Khyber Pakhtunkhwa". Sample of eight schools, four male (two rural and two urban) and four female (two rural and two urban) was drawn/selected from selected district. Thus a total sample of one hundred and ninety-two schools was selected randomly from all the twenty four districts. A questionnaire entailing of thirty one items was developed and administered to the stakeholders for the purpose of data collection. Percentage statistics was used for analysis of data. Mostly teachers opinion that causes of dropout include illiterate paternal, deprived financial position of parents, overburden courses, absence of governmental attention, absence of student's interest, absence of co-curricular activities, students absenteeism from school, distance between school and home, repeating the same class, absence of physical facilities absence of efforts to abstain students from being drop out, absence of paternal interest, paternal over affection and rising expenses.