Punjab: The Punjab education department will hold the third mega parent-teacher meeting (PTM) in around 20,000 government primary and upper primary schools across the state tomorrow. Education minister Harjot Bains said over 20 lakh parents will attend the meeting. The meeting will be held from 9 am to 2.30 pm in which teachers, students, parents, school management committees and community leaders will come together to discuss education advancement strategies.