Two factors I think that will be effective in contributing to an inclusive ethos and culture are :

1. Promoting a positive classroom environment be it physical or virtual class, it is vital for student's engagement and learning.   Teachers should have a kind caring attitude to welcome all students regardless of their ethnicities, socio-economic background or educational readiness.  In addition, singing a welcome song in two different languages or a simple greetings or having informal conversations can provide a warm atmosphere as students enter the classroom. By doing this, it will boost students' participation based on the mutual respect developed between teachers and students.

2. Encouraging student interaction amongst students and their peers will help them to converse with others from different backgrounds which in turn learn about different life experiences they may encounter as well as provide an opportunity for them to meet and connect with their peers of different backgrounds.