Is there communication in classes in the target language (English)?
We can measure and evaluate the value of a class of a language according to the quantity and quality of communication in English in that class.
The first premise is the teacher should say everything in English or 95% more or less.
Try to foster communication from the textbook or the worksheets you compose for your students. After a unit, for example, try to discuss the contents of that unit. / Photo from: T-on-desk-talking-to-class imgkid com